BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales

Abstract

(abridged for arXiv) We report results from the BICEP2 experiment, a cosmic microwave background (CMB) polarimeter specifically designed to search for the signal of inflationary gravitational waves in the B-mode power spectrum around $\ell \sim 80$. The telescope comprised a 26 cm aperture all-cold refracting optical system equipped with a focal plane of 512 antenna coupled transition edge sensor 150 GHz bolometers each with temperature sensitivity of $\approx 300\mu {\mathrm{K}}_{\mathrm{CMB}}\sqrt{s}$. BICEP2 observed from the South Pole for three seasons from 2010 to 2012. A low-foreground region of sky with an effective area of 380 square deg was observed to a depth of 87 nK deg in Stokes $Q$ and $U$. We find an excess of $B$-mode power over the base lensed-LCDM expectation in the range $30<\ell <150$, inconsistent with the null hypothesis at a significance of $>5\sigma$. Through jackknife tests and simulations we show that systematic contamination is much smaller than the observed excess. We also examine a number of available models of polarized dust emission and find that at their default parameter values they predict power $\sim (5-10)\times$ smaller than the observed excess signal. However, these models are not sufficiently constrained to exclude the possibility of dust emission bright enough to explain the entire excess signal. Cross correlating BICEP2 against 100 GHz maps from the BICEP1 experiment, the excess signal is confirmed and its spectral index is found to be consistent with that of the CMB, disfavoring dust at $1.7\sigma$. The observed $B$-mode power spectrum is well fit by a lensed-LCDM + tensor theoretical model with tensor-to-scalar ratio $r=0.20_{-0.05}^{+0.07}$, with $r=0$ disfavored at $7.0\sigma$. Accounting for the contribution of foreground dust will shift this value downward by an amount which will be better constrained with upcoming data sets.

26 pages, 14 figures

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• Reconstructing inflationary paradigm within Effective Field Theory framework
• Disentangling the $f(R)$ - Duality
• Clustering Fossil from Primordial Gravitational Waves in Anisotropic Inflation
• GroundBIRD : A CMB polarization experiment with MKID arrays
• On the current status of Modified Gravity
• Fermi-bounce cosmology and the fermion curvaton mechanism
• Tensor Minkowski Functionals: first application to the CMB
• On finite density effects on cosmic reheating and moduli decay and implications for Dark Matter production
• Examining the consistency relations describing the three-point functions involving tensors
• Gravitational quantum effects on power spectra and spectral indices with higher-order corrections
• Forecasting sensitivity on tilt of power spectrum of primordial gravitational waves after Planck satellite
• Hidden axion dark matter decaying through mixing with QCD axion and the 3.5 keV X-ray line
• Axion mass estimates from resonant Josephson junctions
• The EBEX Balloon Borne Experiment - Optics, Receiver, and Polarimetry
• Development of large radii half-wave plates for CMB satellite missions
• Higgs Vacuum Stability in a Mass-Dependent Renormalisation Scheme
• The Thermal Design, Characterization, and Performance of the SPIDER Long-Duration Balloon Cryostat
• Scalar and tensor perturbations in loop quantum cosmology: High-order corrections
• Statistical tests of sterile neutrinos using cosmology and short-baseline data
• Vanishing Higgs potential at the Planck scale in a singlet extension of the standard model
• Lensing reconstruction from a patchwork of polarization maps
• The Primordial Inflation Polarization Explorer (PIPER)
• No scale SUGRA SO(10) derived Starobinsky Model of Inflation
• Inflation After False Vacuum Decay: New Evidence from BICEP2
• Affleck-Dine Baryogenesis and Dark Matter Production after High-scale Inflation
• Constraining the gravitational wave energy density of the Universe in the Range 0.1 Hz to 1 Hz using the Apollo Seismic Array
• Energy Conditions in Higher Derivative $f(R,\square R,T)$ Gravity
• ForSE: a GAN based algorithm for extending CMB foreground models to sub-degree angular scales
• Inflation beyond T-models and primordial B-modes
• Statistical properties of galactic CMB foregrounds: dust and synchrotron
• Gravity Waves From Non-Minimal Quadratic Inflation
• Bouncing cosmology in modified gravity with higher-order Gauss-Bonnet curvature term
• Classicalization of inflationary perturbations by collapse models in the light of BICEP2
• Wiener filtering with a seismic underground array at the Sanford Underground Research Facility
• Dark Matter from Late Invisible Decays to/of Gravitinos
• Leptogenesis with a dynamical seesaw scale
• Axion Models with High Scale Inflation
• Complementing the ground-based CMB Stage-4 experiment on large scales with the PIXIE satellite
• Statistical Anisotropies in Gravitational Waves in Solid Inflation
• Reconciling Induced-Gravity Inflation in Supergravity With The Planck 2013 & BICEP2 Results
• Annual Modulation of Cosmic Relic Neutrinos
• Notes on natural inflation
• The refractive index of relic gravitons
• A Caveat on Building Nonlocal Models of Cosmology
• Planck intermediate results. XXXVIII. E- and B-modes of dust polarization from the magnetized filamentary structure of the interstellar medium
• Magnetic field spectrum at cosmological recombination revisited
• Single field inflation with modulated potential in light of the Planck and BICEP2
• Helical Phase Inflation
• Vacuum and Gravitons of Relic Gravitational Waves, and Regularization of Spectrum and Energy-Momentum Tensor
• Quantum Corrections in Galileons from Matter Loops
• Interacting Holographic Extended Chaplygin Gas and Phantom Cosmology in the Light of BICEP2
• Criticality and Inflation of the Gauged B-L Model
• Axion cold dark matter: status after Planck and BICEP2
• Dark Radiation in Anisotropic LARGE Volume Compactifications
• Scalar suppression on large scales in open inflation
• Tibet${}^{\prime }$s Window on Primordial Gravitational Waves
• Testing gravity theories using tensor perturbations
• Producing Synthetic Maps of Dust Polarization using Velocity Channel Gradient Technique
• Inflation with Fayet-Iliopoulos Terms
• Dark Energy and Equation of State Oscillations with Collisional Matter Fluid in Exponential Modified Gravity
• Searching for Primordial Magnetic Fields with CMB B-modes
• Power spectra and spectral indices of $k$-inflation: high-order corrections
• Higgs-portal assisted Higgs inflation with a sizeable tensor-to-scalar ratio
• Power law Starobinsky model of inflation from no-scale SUGRA
• Constraint on noncommutative spacetime from PLANCK data
• Efficient optimal non-Gaussian CMB estimators with polarisation
• Inflation in a two 3-form fields scenario
• Pre-flight integration and characterization of the SPIDER balloon-borne telescope
• 2017 upgrade and performance of BICEP3: a 95GHz refracting telescope for degree-scale CMB polarization
• Measuring growth index in a universe with sterile neutrinos
• Can CMB data constrain the inflationary field range?
• Polarization Predictions for Inflationary CMB Power Spectrum Features
• Curvaton in large field inflation
• Sound speed of scalar field dark energy: weak effects and large uncertainties
• BICEP2 / Keck Array VII: Matrix based E/B Separation applied to BICEP2 and the Keck Array
• Testing Hybrid Natural Inflation with BICEP2
• Reconstruction of interaction rate in Holographic dark energy model with Hubble horizon as the infrared cut-off
• Constraining light sterile neutrino mass with the BICEP2/Keck Array 2014 B-mode polarization data
• Exponential potential for an inflaton with nonminimal kinetic coupling and its supergravity embedding
• Primordial massive gravitational waves from Einstein-Chern-Simons-Weyl gravity
• Generation of large-scale magnetic fields, non-Gaussianity, and primordial gravitational waves in inflationary cosmology
• Cosmological bounces in spatially flat FRW spacetimes in metric f(R) gravity
• Constructing an Inflaton Potential by Mimicking Modified Chaplygin Gas
• Probing correlations of early magnetic fields using mu-distortion
• Joint Planck and WMAP Assessment of Low CMB Multipoles
• Shift Symmetry and Higgs Inflation in Supergravity with Observable Gravitational Waves
• A model-independent fit to Planck and BICEP2 data
• Light Higgsinos in Pure Gravity Mediation
• Studying Inflation with Future Space-Based Gravitational Wave Detectors
• Spiral Inflation
• Modified Lyth bound and implications of BICEP2 results
• String Cosmology - Large-Field Inflation in String Theory
• String Resonances at Hadron Colliders
• Expected dipole asymmetry in CMB polarization
• Physics of the cosmic microwave background anisotropy
• Predictions of Cosmic Microwave Background Foregrounds Dust Polarization Using Velocity Gradients
• Axion Dark Matter Research with IBS/CAPP
• Colloquium: Time-reversal violation with quantum-entangled B mesons
• Quantization of (1+1)-dimensional Hořava-Lifshitz theory of gravity
• Constraints on cosmological birefringence from Planck and Bicep2/Keck data
• The EBEX Balloon Borne Experiment - Detectors and Readout
• Multi-resolution Bayesian CMB component separation through Wiener-filtering with a pseudo-inverse preconditioner
• Conformal inflation from the Higgs
• Orbit optimization and time delay interferometry for inclined ASTROD-GW formation with half-year precession-period
• Dynamical Fractional Chaotic Inflation -- Dynamical Generation of a Fractional Power-Law Potential for Chaotic Inflation
• Monodromy Inflation in SUSY QCD
• Cosmological consequences of classical flavor-space locked gauge field radiation
• Component Separation of a Isotropic Gravitational Wave Background
• The Weyl tensor correlator in cosmological spacetimes
• Asymptotically Safe Higgs Inflation
• Warped DGP model in warm intermediate inflation with a general dissipative coefficient in light of BICEP2 and Planck results
• Dark matter relic density in Gauss-Bonnet braneworld cosmology
• UV-extending Ghost Inflation
• Dimensional oxidation and modular completion of non-geometric type IIB action
• Inflationary generalized Chaplygin gas and dark energy in the light of the Planck and BICEP2 experiments
• Inflationary Parameters in Renormalization Group Improved ${\varphi }^4$ Theory
• Oscillating modulation to B-mode polarization from varying propagating speed of primordial gravitational waves
• Inflation in Terms of a Viscous van der Waals Coupled Fluid
• Recovery of Large Angular Scale CMB Polarization for Instruments Employing Variable-delay Polarization Modulators
• Dark neutrino interactions make gravitational waves blue
• Probing large-scale magnetism with the Cosmic Microwave Background
• Anisotropic Spheres Via Embedding Approach in $f(R,\varphi ,X)$ Gravity
• Running with BICEP2: Implications for Small-Scale Problems in CDM
• Generation of circular polarization in CMB radiation via nonlinear photon-photon interaction
• Towards natural inflation from weakly coupled heterotic string theory
• Pre-inflationary genesis with CMB B-mode polarization
• Cosmic Polarization Rotation: an Astrophysical Test of Fundamental Physics
• Chiral Imprint of a Cosmic Gauge Field on Primordial Gravitational Waves
• Dynamics of Modified Chaplygin Gas Inflation on the Brane with Bulk Viscous Pressure
• Utilizing the null stream of the Einstein Telescope
• In-flight polarization angle calibration for LiteBIRD: blind challenge and cosmological implications
• Pulsar timing noise and the minimum observation time to detect gravitational waves with pulsar timing arrays
• Statistical diagnostics to identify Galactic foregrounds in B-mode maps
• Effect of transitions in the Planck mass during inflation on primordial power spectra
• LiteBIRD Science Goals and Forecasts: Improving Sensitivity to Inflationary Gravitational Waves with Multitracer Delensing
• Principal component analysis of the primordial tensor power spectrum
• Asymmetric dark matter in braneworld cosmology
• Tensor perturbations during inflation in a spatially closed Universe
• Detecting Primordial $B$-Modes after Planck
• Probing the statistical properties of CMB $B$-mode polarization through Minkowski Functionals
• Higher Derivative D-term Inflation in New-minimal Supergravity
• Study of the charged super-Chandrasekhar limiting mass white dwarfs in the $f(R,\mathcal{T})$ gravity
• Natural Inflation and Low Energy Supersymmetry
• Singular deformations of nearly $R^2$ inflation potentials
• Constraints on Patchy Reionization from Planck CMB Temperature Trispectrum
• Topological inflation from the Starobinsky model in supergravity
• Expectation of primordial gravity waves generated during inflation
• Constraint on the primordial gravitational waves from the joint analysis of BICEP2 and Planck HFI 353 GHz dust polarization data
• Quantum gravity corrections to the conformally coupled scalar self-mass-squared on de Sitter background
• 3.5 keV X-ray line and R-Parity Conserving Supersymmetry
• Primordial non-Gaussian signatures in CMB polarization
• A Density Spike on Astrophysical Scales from an N-Field Waterfall Transition
• Correspondence of I- and Q-balls as Non-relativistic Condensates
• BICEP2, the Higgs Mass and the SUSY-breaking Scale
• Dark Matter Chaotic Inflation in Light of BICEP2
• Observational Constraints on Varying-alpha Domain Walls
• Blue running of the primordial tensor spectrum
• Cosmological constraints from $\mu E$ cross-correlations
• Constraints on Gravitino Decay and the Scale of Inflation using CMB spectral distortions
• Study of Tsallis holographic dark energy model in the framework of Fractal cosmology
• The Chaotic Regime of D-Term Inflation
• Born-corrections to weak lensing of the cosmic microwave background temperature and polarisation anisotropies
• Testing supersymmetric Higgs inflation with non-Gaussianity
• TASI 2014 Lectures: The Hunt for Dark Matter
• Constraints on features in the inflationary potential from future Euclid data
• Light Sterile Neutrinos and Inflationary Freedom
• Tachyon field inflation in the light of BICEP2
• Gravitational quantum effects in the light of BICEP2 results
• Inflationary gravitational waves in the effective field theory of modified gravity
• Elementary Theorems Regarding Blue Isocurvature Perturbations
• Can Self-Ordering Scalar Fields explain the BICEP2 B-mode signal?
• Scalar perturbation in warm tachyon inflation in LQC in light of Plank and BICEP2
• Tensor-to-Scalar Ratio in Eddington-inspired Born-Infeld Inflation
• New Atomic probes for Dark Matter detection: Axions, Axion-like particles and Topological Defects
• Genus Topology and Cross-Correlation of BICEP2 and Planck 353 GHz B-Modes: Further Evidence Favoring Gravity Wave Detection
• Exit from Inflation with a First-Order Phase Transition and a Gravitational Wave Blast
• Infrared-finite graviton two-point function in static de Sitter space
• No quasi-stable scalaron lump forms after $R^2$ inflation
• Phenomenological approaches of inflation and their equivalence
• Improvement of energy-momentum tensor and non-Gaussianities in holographic cosmology
• Superbounce and Loop Quantum Ekpyrotic Cosmologies from Modified Gravity: $F(R)$, $F(G)$ and $F(T)$ Theories
• Helical Inflation and Cosmic Strings
• Flipped GUT Inflation
• BICEP / Keck XII: Constraints on axion-like polarization oscillations in the cosmic microwave background
• Grand Unification and Subcritical Hybrid Inflation
• Geodesic "curve"-of-sight formulae for the cosmic microwave background: a unified treatment of redshift, time delay, and lensing
• Excursion into Quantum Gravity via Inflation
• Compensation for large tensor modes with iso-curvature perturbations in CMB anisotropies
• Natural Braneworld Inflation in Light of Recent Results from Planck and BICEP2
• Power Spectrum of Inflationary Attractors
• New constraints on cosmic polarization rotation from the ACTPol cosmic microwave background B-Mode polarization observation and the BICEP2 constraint update
• From Hybrid to Quadratic Inflation With High-Scale Supersymmetry Breaking
• Dante's Waterfall
• One-loop corrections to vector Galileon theory
• Inflation without quantum gravity
• Instrumental systematics biases in CMB lensing reconstruction: a simulation-based assessment
• Pure E and B polarization maps via Wiener filtering
• Can one measure the Cosmic Neutrino Background?
• Discrete Glimpses of the Physics Landscape after the Higgs Discovery
• Planck intermediate results. XLI. A map of lensing-induced B-modes
• Inflation that runs naturally: Gravitational waves and suppression of power at large and small scales
• Testing Split Supersymmetry with Inflation
• On degenerate models of cosmic inflation
• A Theory of Self-Resonance After Inflation, Part 2: Quantum Mechanics and Particle-Antiparticle Asymmetry
• Cosmological models with squared trace in modified gravity
• The f(R) Gravity Function of the Linde Quintessence
• Late Time Cosmological Evolution in f(R) theories with Ordinary and Collisional Matter
• No evidence for the blue-tilted power spectrum of relic gravitational waves
• An efficient probe of the cosmological CPT violation
• Natural Milli-Charged Inflation
• Implementing odd-axions in dimensional oxidation of non-geometric type IIB action
• A no-go theorem for monodromy inflation
• Two fluid anisotropic dark energy models in a scale invariant theory
• Polynomial Chaotic Inflation in Supergravity Revisited
• Large tensor-to-scalar ratio and running of the scalar spectral index with Instep Inflation
• Dynamical D-Terms in Supergravity
• Primordial black holes from temporally enhanced curvature perturbation
• Lyth bound revisited
• Perfect fluid and F(T) gravity descriptions of inflationary universe and comparison with obervational data
• Wormholes and naked singularities in the complete Horava theory
• Towards a formulation of $f(R)$ supergravity
• New Constraints on Cosmic Polarization Rotation from B-Mode Polarization in Cosmic Microwave Background
• Inflation in a modified radiative seesaw model
• Stability of the Einstein static Universe in Einstein-Cartan-Brans-Dicke gravity
• Sharp inflaton potentials and bi-spectra: Effects of smoothening the discontinuity
• The Kullback-Leibler Divergence as an Estimator of the Statistical Properties of CMB Maps
• The Not-So-Sterile 4th Neutrino: Constraints on New Gauge Interactions from Neutrino Oscillation Experiments
• Constraining Sterile Neutrinos Using Reactor Neutrino Experiments
• Natural Inflation from Near Alignment in Heterotic String Theory
• Making maps of Cosmic Microwave Background polarization for B-mode studies: the POLARBEAR example
• Current constraints on early and stressed dark energy models and future 21 cm perspectives
• Consistency Relations for Large Field Inflation: Non-minimal Coupling
• Gauged M-flation After BICEP2
• Gravitational Waves: A Test for Modified Gravity
• Stochastic background of gravitational waves from cosmological sources
• Noether symmetry in a nonlocal f(T) Gravity
• Higgs vacuum stability and inflationary dynamics after BICEP2 and PLANCK dust polarisation data
• Two modes of carbonaceous dust alignment
• Generic inference of inflation models by non-Gaussianity and primordial power spectrum reconstruction
• Non-Canonical Inflation in Supergravity
• A Rich Tapestry: Supersymmetric Axions, Dark Radiation, and Inflationary Reheating
• Inflation including collapse of the wave function: The quasi-de Sitter case
• Inflationary Tensor Perturbation in Eddington-inspired Born-Infeld gravity
• Polarized Synchrotron Foreground Assessment for CMB Experiments
• Primordial gravitational waves and the collapse of the wave function
• Inflation in supergravity without Kahler potential
• Reconstructing the Local Potential of Inflation with BICEP2 data
• Chaotic inflation with curvaton induced running
• Strong Dynamics and Inflation: a review
• The Hidden Flat Like Universe II: Quasi inverse power law inflation by $f(T)$ gravity
• Photon-neutrino scattering and the B-mode spectrum of CMB photons
• Constraining reionization with the first measurement of the cross-correlation between the CMB optical-depth fluctuations and the Compton y-map
• Revised estimates of CMB $B$-mode polarization induced by patchy reionization
• Natural Inflation with Natural Trans-Planckian Axion Decay Constant from Anomalous $U(1{)}_X$
• Phase Locked Inflation -- Effectively Trans-Planckian Natural Inflation
• Modified Gauss-Bonnet Gravity with Radiating Fluids
• On testing and extending the inflationary consistency relation for tensor modes
• Precision Predictions for the Primordial Power Spectra of Scalar Potential Models of Inflation
• Design of 280 GHz feedhorn-coupled TES arrays for the balloon-borne polarimeter SPIDER
• Isocurvature perturbations and tensor mode in light of Planck and BICEP2
• Negative running prevents eternal inflation
• BTZ gems inside regular Born-Infeld black holes
• Chaotic inflation in higher derivative gravity theories
• Dynamical breaking of shift-symmetry in supergravity-based inflation
• A new parametrization for dark energy density and future deceleration
• Cosmic backgrounds of relic gravitons and their absolute normalization
• Tilt and Tensor-to-Scalar Ratio in Multifield Monodromy Inflation
• New model of axion monodromy inflation and its cosmological implications
• Linking the BICEP2 result and the hemispherical power asymmetry through spatial variation of $r$
• Bounds on Higher Derivative $f(R,\square R,T)$ Models from Energy Conditions
• A Minimal Sub-Planckian Axion Inflation Model with Large Tensor-to-Scalar Ratio
• Revised cosmological parameters after BICEP 2 and BOSS
• The scalar modes of the relic gravitons
• Bayesian evidence of non-standard inflation: isocurvature perturbations and running spectral index
• Polymer inflation
• Unification of Inflation and Dark Energy from Spontaneous Breaking of Scale Invariance
• Fractional chaotic inflation in the lights of PLANCK and BICEP2
• Standard Model and Graviweak Unification with (Super)Renormalizable Gravity. Part I: Visible and Invisible Sectors of the Universe
• Small field models with gravitational wave signature supported by CMB data
• Observational Consequences of a Landscape: Epilogue
• A Strategy to Minimize Dust Foregrounds in B-mode Searches
• $f(\mathcal{G},\text{T})$ Gravity Bouncing Universe with Cosmological Parameters
• A hybrid map-$C_{\ell }$ component separation method for primordial CMB $B$-mode searches
• Status of advanced ground-based laser interferometers for gravitational-wave detection
• Inflation in $R^2$ supergravity with non-minimal superpotentials
• Probing early-universe phase transitions with CMB spectral distortions
• Role of higher -dimensional evolving wormholes in the formation of a big rip singularity
• An Implementation of a Channelizer based on a Goertzel Filter Bank for the Read-Out of Cryogenic Sensors
• Inflation Driven by Unification Energy
• The B-mode polarization of CMB and Cosmic Neutrino Background
• Distinguishing between Extra Natural Inflation and Natural Inflation after BICEP2
• Supersymmetric Partially Interacting Dark Matter
• Quantum cosmological consistency condition for inflation
• Unitary evolution of the quantum universe with a Brown-Kuchar dust
• Large Scale Suppression of Scalar Power on a Spatial Condensation
• Affleck-Dine baryogenesis with R-parity violation
• Electromagnetism with dimension-five operators
• Searching for high-frequency gravitational waves by ground high field magnetic resonant sweepings
• Cosmological perturbations in \bar{QCD}- inflation. Estimates confronting the observations, including BICEP2
• Leptogenesis in a neutrino mass model coupled with inflaton
• Deforming the Starobinsky model in ghost-free higher derivative supergravities
• Bayesian evidence and predictivity of the inflationary paradigm
• Negative Running of the Spectral Index, Hemispherical Asymmetry and the Consistency of Planck with Large $r$
• CMB B-mode auto-bispectrum produced by primordial gravitational waves
• Spinodal Instabilities and Super-Planckian Excursions in Natural Inflation
• Constraints on tachyon inflationary models with an AdS/CFT correspondence
• The Q/U Imaging ExperimenT: Polarization Measurements of the Galactic Plane at 43 and 95 GHz
• Ambiguity in running spectral index with an extra light field during inflation
• Scale-dependent hemispherical asymmetry from general initial state during inflation
• Simple inflationary models in Gauss-Bonnet brane-world cosmology
• Hemispherical asymmetry from an isotropy violating stochastic gravitational wave background
• A LEKID-based CMB instrument design for large-scale observations in Greenland
• Fine-structure constant constraints on Bekenstein-type models
• QUBIC VI: cryogenic half wave plate rotator, design and performances
• Approach to exact solutions of cosmological perturbations: Tachyon field inflation
• Tensors, BICEP2, prior dependence, and dust
• Anisotropy in Inflation with Non-minimal Coupling
• Design and performance of wide-band corrugated walls for the BICEP Array detector modules at 30/40 GHz
• Detecting primordial gravitational waves with circular polarization of the redshifted 21 cm line: I. Formalism
• Atick-Witten Hagedorn Conjecture, near scale-invariant matter and blue-tilted gravity power spectrum
• E and B families of the Stokes parameters in the polarized synchrotron and thermal dust foregrounds
• How to avoid X'es around point sources in maximum likelihood CMB maps
• Scale-dependent homogeneity measures for causal dynamical triangulations
• PRISM: Recovery of the primordial spectrum from Planck data
• Chaotic inflation limits for non-minimal models with a Starobinsky attractor
• Bound on largest $r\lesssim 0.1$ from sub-Planckian excursions of inflaton
• The History of Inflation from Microwave Background Polarimetry and Laser Interferometry
• Linearized iterative least-squares (LIL): A parameter fitting algorithm for component separation in multifrequency CMB experiments such as Planck
• Illustrating SUSY breaking effects on various inflation mechanisms
• Aligned Natural Inflation and Moduli Stabilization from Anomalous $U(1)$ Gauge Symmetries
• Constraining Hybrid Natural Inflation with recent CMB data
• Effects of cosmic strings with delayed scaling on CMB anisotropy
• Scherk-Schwarz Supersymmetry Breaking in 4D
• Clearing the Brush: The Last Stand of Solo Small Field Inflation
• Naturalness and Chaotic Inflation in Supergravity from Massive Vector Multiplets
• No-boundary wave function for two-field inflation
• Baryogenesis through Asymmetric Hawking Radiation from Primordial Black Holes as Dark Matter
• Modeling and Analyzing Stability of Hybrid Stars within $f(Q)$ Gravity
• Robust constraints on tensor perturbations from cosmological data: a comparative analysis from Bayesian and frequentist perspectives
• Quasi-matter bounce and inflation in the light of the CSL model
• The first observations of wide-band interferometers and the spectra of relic gravitons
• Future detectability of gravitational-wave induced lensing from high-sensitivity CMB experiments
• Eternal inflation in a dissipative and radiation environment: Heated demise of eternity
• Gravitational waves induced by spinor fields
• Quasi-B-mode generated by high-frequency gravitational waves and corresponding perturbative photon fluxes
• Super-gauge Field in de Sitter Universe
• A new map-making algorithm for CMB polarisation experiments
• Improving cosmic string network simulations
• Bogoliubov Excited States and the Lyth Bound
• Cosmological back-reaction in modified gravity and its implications for dark energy
• Large tensor spectrum of BICEP2 in the natural SUSY hybrid model
• Theoretical implications of detecting gravitational waves
• The Darkness of Spin-0 Dark Radiation
• Tensor Perturbations in Anisotropically Curved Cosmologies
• Fate of global symmetries in the Universe: QCD axion, quintessential axion and trans-Planckian inflaton decay-constant
• Relic Neutrino Degeneracies and Their Impact on Cosmological Parameters
• The Logotropic Dark Fluid: Observational and Thermodynamic Constraints
• Modeling effective FRW cosmologies with perfect fluids from states of the hybrid quantum Gowdy model
• Inflationary gravitational waves in collapse scheme models
• Mitigation of the spectral dependent polarization angle response for achromatic half-wave plate
• Dark matter indirect detection signals and the nature of neutrinos in the supersymmetric $U(1{)}_{B-L}$ extension of the standard model
• The Tilt of Primordial Gravitational Waves Spectra from BICEP2
• Systematic effects induced by Half Wave Plate precession into Cosmic Microwave Background polarization measurements
• Daughters mimic sterile neutrinos (almost!) perfectly
• Higgs shifts from electron-positron annihilations near neutron stars
• Higgs Mass and Gravity Waves in Standard Model False Vacuum Inflation
• Single Field Inflation in Supergravity with a $U(1)$ Gauge Symmetry
• Tensor Mode Backreaction During Slow-roll Inflation
• A keV String Axion from High Scale Supersymmetry
• Estimation of Inflation parameters for Perturbed Power Law model using recent CMB measurements
• Does the BICEP2 Observation of Cosmological Tensor Modes Imply an Era of Nearly Planckian Energy Densities?
• Higgs Inflation and General Initial Conditions
• Large tensor-to-scalar ratio from Composite Inflation
• Testing theories of Gravity and Supergravity with inflation and observations of the cosmic microwave background
• Quantum collapse as source of the seeds of cosmic structure during the radiation era
• A short note on the curvature perturbation at second order
• Polarization of the Cosmic Infrared Background Fluctuations
• Removing the Faddeev-Popov zero modes from Yang-Mills theory in spacetimes with compact spatial sections
• Reheating constraints on mutated hilltop inflation
• Testing the ABS method with the simulated Planck temperature maps
• A Universal Bound on Excitations of Heavy Fields during Inflation
• Low reheating temperatures in monomial and binomial inflationary potentials
• How does pressure gravitate? Cosmological constant problem confronts observational cosmology
• Probing the origin of our Universe through cosmic microwave background constraints on gravitational waves
• Inflationary Weak Anisotropic Model with General Dissipation Coefficient
• Effects of the speed of sound at large-N
• Muon g-2 in GMSB with Adjoint Messengers
• Multiple Field Inflation and Signatures of Heavy Physics in the CMB
• Jump in fluid properties of inflationary universe to reconcile scalar and tensor spectra
• CDM/baryon isocurvature perturbations in a sneutrino curvaton model
• No-scale SUGRA Inflation and Type-I seesaw
• Conformal Higgs Inflation
• Gravitational Waves in G4v
• BICEP2, the curvature perturbation and supersymmetry
• Evolution of Semilocal String Networks: II. Velocity estimators
• Data driven foreground clustering approach to component separation in multifrequency CMB experiments: A new Planck CMB map
• Formation of Cylindrical Gravastars in Modified Gravity
• Constraints on the cosmological parameters from BICEP2, Planck and WMAP
• Symmetry Breaking Indication for Supergravity Inflation in Light of the Planck 2015
• Gauss-Bonnet assisted braneworld inflation in light of BICEP2 and Planck data
• Scalar-Tensor Anti-Cross-Correlation does not Help to Reconcile the Tension between BICEP2 and Planck
• Gravitational Waves from Double Hybrid Inflation
• Primordial Power Spectra of EiBI Inflation in Strong Gravity Limit
• Phenomenology analysis of duration inflation for Tachyon field in loop quantum cosmology
• Testing for foreground residuals in the Planck foreground cleaned maps: A new method for designing confidence masks
• On Dark Matter Selected High-Scale Supersymmetry
• Inflationary behavior of $R^2$ gravity in a conformal framework
• Flat Direction Inflation with Running Kinetic Term and Baryogenesis
• Holography for a Non-Inflationary Early Universe
• Non-Gaussianity after BICEP2
• RG Analysis for Quantum Gravity with A Single Dimensionless Coupling
• Primordial Gravitational Waves Measurements and Anisotropies of CMB Polarization Rotation
• R-symmetric Axion/Natural Inflation in Supergravity via Deformed Moduli Dynamics
• The biparametric Fisher-Rényi complexity measure and its application to the multidimensional blackbody radiation
• Isotropic Expansion of Inhomogeneous Universe
• Forecast of foreground cleaning strategies for AliCPT-1
• Noncommutative quantum mechanics of simple matter systems interacting with circularly polarized gravitational waves
• A Permutation on Hybrid Natural Inflation
• The $c$-map, Tits Satake subalgebras and the search for $\mathcal{N}=2$ inflaton potentials
• Simple brane-world inflationary models in light of BICEP2
• Chaotic Inflation from Nonlinear Sigma Models in Supergravity
• Moduli inflation in five-dimensional supergravity models
• Intensity-Coupled-Polarization in Instruments with a Continuously Rotating Half-Wave Plate
• Running of scalar spectral index in multi-field inflation
• Perspective on completing natural inflation
• Stochastic Gravitational Wave Background from Exoplanets
• Topological Inflation with Large Tensor-to-scalar Ratio
• The Diffuse Light of the Universe - On the microwave background before and after its discovery: open questions
• Generically large nongaussianity in small multifield inflation
• Violation of consistency relations and the protoinflationary transition
• Resolving primordial physics through correlated signatures
• Isotropy-Violation Diagnostics for $B$-mode Polarization Foregrounds to the Cosmic Microwave Background
• Q-ball dark matter and baryogenesis in high-scale inflation
• General $f(R)$ and conformal inflation from minimal supergravity plus matter
• Polarization power spectra and dust cloud morphology
• Higher-Order Gravitational Lensing Reconstruction using Feynman Diagrams
• The Superhorizon Test of Future B-mode Experiments
• Abelian cosmic string in the Starobinsky model of gravity
• Precision of future experiments measuring primordial tensor fluctuation
• Large Field Inflation Models from Higher-Dimensional Gauge Theories
• Damping of tensor mode in spatially closed cosmology
• Detecting the tensor-to-scalar ratio with the pure pseudospectrum reconstruction of $B$-mode
• Cosmological Perturbations: Vorticity, Isocurvature and Magnetic Fields
• Stochastic microhertz gravitational radiation from stellar convection
• Inflaton fluctuations in the presence of cosmological defects
• Biparametric complexities and the generalized Planck radiation law
• BFORE: The B-mode Foreground Experiment
• Connection between dark matter abundance and primordial tensor perturbations
• Thermal gravitational-wave background in the general pre-inflationary scenario
• Baryogenesis via Hawking-like Radiation in the FRW Space-time
• Slow-roll inflationary senario in the maximally extended background
• High-Scale SUSY Breaking Models in light of the BICEP2 Result
• Statistical imprints of CMB B-type polarization leakage in an incomplete sky survey analysis
• B-mode Power Spectrum of CMB via Polarized Compton Scattering
• Primordial magnetic fields from self-ordering scalar fields
• Thermal Effects and Sudden Decay Approximation in the Curvaton Scenario
• Non-Gaussianities in DBI inflation with angular motion
• Faraday scaling and the Bicep2 observations
• Evaluation of the single-component thermal dust emission model in CMB experiments
• Supersymmetric hybrid inflation with non-minimal coupling to gravity
• Dark Photon as Fractional Cosmic Neutrino Masquerader
• Observational constraints on Tsallis holographic dark energy with Ricci horizon cutoff
• Modified natural inflation: A small single field model with a large tensor to scalar ratio
• Improving the Single Scalar Consistency Relation
• D-Flation
• B-modes and the sound speed of primordial fluctuations
• Prospects for the measurement of muon-neutrino disappearance at the FNAL-Booster
• The observational position of simple non-minimally coupled inflationary scenarios
• Noether Symmetry Approach in Eddington-inspired Born-Infeld gravity
• New probe of inflationary gravitational waves: cross-correlations of lensed primary CMB B-modes with large-scale structure
• The Primordial Particle Accelerator of the Cosmos
• Chaotic Hybrid Inflation with a Gauged B - L
• Gravitino Dark Matter and Flavor Symmetries
• Consistency Relations for Large Field Inflation
• A Constrained NILC method for CMB B mode observations
• Simple brane-world inflationary models: an update
• Early inflation induced gravity waves can restrict Astro-Particle physics
• CMB B-modes, spinorial space-time and Pre-Big Bang (II)
• Unraveling the CMB lack-of-correlation anomaly with the cosmological gravitational wave background
• Small field models of inflation that predict a tensor-to-scalar ratio $r=0.03$
• Axino Dark Matter in Moduli-induced Baryogenesis
• BICEP's acceleration
• Signatures of Modified Dispersion Relation of Graviton in the Cosmic Microwave Background
• Radiative Inflation and Dark Energy RIDEs Again after BICEP2
• Heavy Gravitino and Split SUSY in the Light of BICEP2
• Higgs instability and de Sitter radiation
• Observational constraints on tachyonic chameleon dark energy model
• Signatures of Planck Corrections in a Spiralling Axion Inflation Model
• Inflation of small true vacuum bubble by quantization of Einstein-Hilbert action
• Updated Constraints on Large Field Hybrid Inflation
• Preheating with higher dimensional interaction
• N-flation in Supergravity
• Naturally large tensor-to-scalar ratio in inflation
• Particle Physics and the Cosmic Microwave Background
• Consistency of Anisotropic Inflation during Rapid Oscillations with Planck 2015 Data
• Energy Conditions in Extended $f(R,G,T)$ Gravity
• Using the Crab Nebula as a high precision calibrator for Cosmic Microwave Background polarimeters
• PQ-symmetry for a small Dirac neutrino mass, dark radiation and cosmic neutrinos
• Inflationary field excursion in broad classes of scalar field models
• Gravitational-wave implications for structure formation: A second-order approach
• Hessian and graviton propagator of the proper vertex
• The IR Obstruction to UV Completion for Dante's Inferno Model with Higher-Dimensional Gauge Theory Origin
• Electron-photon interaction in de Sitter ambient space formalism
• Imaging parity-violation in the CMB
• A class of regular bouncing cosmologies
• A Dynamic Modification to Sneutrino Chaotic Inflation
• Gravitational Lensing of the CMB: a Feynman Diagram Approach
• Updated reduced CMB data and constraints on cosmological parameters
• Tensor B mode and stochastic Faraday mixing
• Beginning of Universe through large field hybrid inflation
• BICEP2 and the Central Charge of Holographic Inflation
• Constraining primordial vector mode from B-mode polarization
• Geometric phases and cyclic isotropic cosmologies
• Kinetic Term Anarchy for Polynomial Chaotic Inflation
• Isochronous Spacetimes
• SU(5)xSU(5)' unification and D2 parity: Model for composite leptons
• Scalable background-limited polarization-sensitive detectors for mm-wave applications
• Lensing dispersion of SNIa and small scales of the primordial power spectrum
• A general method for the construction of stable Galileon models consistent with the Planck data results
• Cosmic Ray contribution to the WMAP polarization data on the Cosmic Microwave Background
• Power law $\alpha$-Starobinsky inflation
• A coupled vacuum energy model producing endless alternated phases of accelerated and decelerated expansion
• Superluminal Gravitational Waves
• Tensor to scalar ratio from single field magnetogenesis
• Polarization tensor in de Sitter gauge gravity
• A few remarks on the relationship between elementary particle physics, gravitation and cosmology
• Detecting the relic gravitational wave from the electroweak phase transition at SKA
• Multi-field inflation and the field-space metric
• Quantum origin of suppression for vacuum fluctuations of energy
• False vacuum energy dominated inflation with large $r$ and the importance of ${\kappa }_s$
• Inflaton as a pseudo-Goldstone boson of vacuum energy shift symmetry
• Intermediate inflation under the scrutiny of recent data
• Graceful exit from inflation to radiation era with rapidly decreasing agegraphic potentials
• Magnetization of fluid phonons and large-scale curvature perturbations
• Einstein-aether models III: conformally static metrics, perfect fluid and scalar fields
• Measuring the primordial gravitational waves from cosmic microwave background and stochastic gravitational wave background observations
• Baryon Asymmetries in the Natural Inflation Model
• Sustaining quasi de-Sitter inflation with bulk viscosity
• The Quantum Echo of the Early Universe
• Primordial Magnetic Field Generated in Natural Infation
• Sensing and vetoing loud transient noises for the gravitational-wave detection
• The Simons Observatory: Validation of reconstructed power spectra from simulated filtered maps for the Small Aperture Telescope survey
• How well do we understand the thermal history of the Universe? Implications of the recent BICEP2 data
• CMB lensing forecasts for constraining the primordial perturbations: adding to the CMB temperature and polarization information
• GUT-scale inflation with sizeable tensor modes
• The Large Number Limit of Multifield Inflation
• Challenges and prospects for better measurements of the CMB intensity spectrum
• Inflationary Magnetogenesis in $R^2$-Inflation after Planck 2015
• Geometric sigma model of the Universe
• The Morphology of the Anomalous Microwave Emission in the Planck 2015 data release
• The Emission of Electromagnetic Radiation from Charges Accelerated by Gravitational Waves and its Astrophysical Implications
• Confirmation of the detection of B-modes in the Planck polarization maps
• Natural Inflation from 5D SUGRA and Low Reheat Temperature
• Probing pre-inflationary anisotropy with directional variations in the gravitational wave background
• The Dark Side of ${\theta }_{13}$, ${\delta }_{CP}$, Leptogenesis and Inflation in Type-I Seesaw
• Towards a realistic solution of the cosmological constant fine-tuning problem by Higgs inflation
• See Saw Inflation / Dark Matter / Dark Energy / Baryogenesis
• Statistics of the CMB polarised anisotropies
• On the Lyth bound and single field slow-roll inflation
• Deprojecting beam systematics for next-generation CMB B-mode searches
• The Early Universe with High-Scale Supersymmetry
• Imprints of relic gravitational waves on pulsar timing
• C$\nu$B damping of primordial gravitational waves and the fine-tuning of the C$\gamma$B temperature anisotropy
• Observational effects of the early episodically dominating dark energy
• Cosmological singleton gravity theory and dS/LCFT correspondence
• Observable CMB B-modes from Cosmological Phase Transitions
• CMB delensing with deep learning
• Probing the primordial Universe from the low-multipole CMB data
• A Consistency Relation for the CMB B-mode Polarization in the Squeezed Limit
• Polarization-dependent heating of the cosmic microwave background radiation by a magnetic field
• Noether symmetry approach in non-minimal derivative coupling gravity
• A new experiment for the gravitational waves detection
• The Upper Bound on the Tensor-to-Scalar Ratio Consistent with Quantum Gravity
• #FoundThem - 21st Century Pre-Search and Post-Detection SETI Protocols for Social and Digital Media
• Initial Condition of Relic Gravitational Waves Constrained by LIGO S6 and Multiple Interferometers
• Cosmological parameter fittings with the BICEP2 data
• Spinodal Backreaction During Inflation and Initial Conditions
• An introduction to inflation after Planck: from theory to observations
• Inflationary tensor fossils deformed by solid matter -- scalar field interaction
• Isochronous solutions of Einstein's equations and their Newtonian limit
• Implications of scattering for CMB foreground emission modelling
• Slow roll inflation and BB mode angular power spectrum of CMB
• A neutrino model fit to the CMB power spectrum
• Gravitational waves from the evolution of magnetic field after electroweak epoch
• On Nash theory of gravity with matter contents
• Photon decaying in de Sitter universe
• QUBIC VII: The feedhorn-switch system of the technological demonstrator
• Molecular phonons and their absorption/emission spectra from the far IR to microwaves
• Strange Work in Strange Places: Quantum Field Theory in Curved Space
• Cosmological Constraints on MFV SUSY
• Scale-free power spectrums in the delayed cosmology
• Flavored axion-monodromy inflation
• The Cosmological Effect of CMB/BAO Measurements
• The scientific potential of space-based gravitational wave detectors
• Excess B-modes extracted from the Planck polarization maps
• Spectator fields and their imprints on the Cosmic Microwave Background
• BFORE: A CMB Balloon Payload to Measure Reionization, Neutrino Mass, and Cosmic Inflation
• Higgs, supersymmetry and dark matter after Run I of the LHC
• De Sitter scalar-spinor interaction in Minkowski limit
• Time to move on?
• A Nonminimal Coupling Model and its Short-Range Solar System Impact
• Into the third dimension: stochastic measurements of Stokes parameters within the Poincaré sphere
• Softly Fine-Tuned Standard Model and the Scale of Inflation
• Performance of the polarization leakage correction in the PILOT data
• A new mechanism of realizing inflationary universe with recourse to backreaction of quantized free fields -- Inflation without inflaton --
• Primordial Gravitational Waves and Rescattered Electromagnetic Radiation in the Cosmic Microwave Background
• Interaction of a circularly polarised gravitational wave with a charged particle in a static magnetic background
• Double hybrid inflation and gravitational waves
• Generation of CMB B-mode Polarization from Circular Polarization
• Cosmological three-coupled scalar theory for the dS/LCFT correspondence
• Testing an Inflation Model with Nonminimal Derivative Coupling in the Light of PLANCK 2015 Data
• Gravitino DM and high reheating temperatures after LHC 7/8
• Compton Edge probing basic physics at Jefferson Laboratory: light speed isotropy and Lorentz invariance
• Design and characterization of the POLARBEAR-2b and POLARBEAR-2c cosmic microwave background cryogenic receivers
• Uniformity of Cosmic Microwave Background as a Non-Inflationary Geometrical Effect
• Gauge Field Turbulence as a Cause of Inflation in Chern-Simons Modified Gravity
• BICEP/Keck XXI: Constraints on Early-Universe Parity Violation from Multipole-Dependent Birefringence
• A High-Throughput AES-GCM Implementation on GPUs for Secure, Policy-Based Access to Massive Astronomical Catalogs
• Mitigating point-source contamination in CMB polarization: a Generalized Point Spread Function fitting approach
• Accelerated expansion in the effective field theory of a radiation dominated universe
• Conjugate spinor field equation for massless spin-$\frac{3}{2}$ field in de Sitter ambient space
• Accurate and efficient likelihood modeling for large-scale CMB data
• Primordial magnetic fields in the $f^{2}FF$ model in large field inflation under de Sitter and power law expansion
• The Primordial Magnetic Field (PMF) Generated in Large Field Inflation (LFI), Natural Inflation (NI) and $R^2$-Inflation by $f^{2}FF$ Model
• Optimal map-making with singularities
• Status of CMB observations in 2015
• Axions, strong and weak CP, and KNP inflation
• Dynamical Space-Time and Gravitational Waves
• Noether gauge symmetry of Dirac field in $2+1$ dimensional gravity
• Bosonic (p - 1)-forms in Einstein-Cartan theory of gravity
• Some comments on a new type of superconducting gravity wave detector
• Strong CP problem, axions, and cosmological implications of CP violation
• Fitting BICEP2 with defects, primordial gravitational waves and dust
• It's Always Darkest Before the Cosmic Dawn: Early Results from Novel Tools and Telescopes for 21 cm Cosmology
• Evaluation of the cosmological constant in inflation with a massive non-minimal scalar field
• Aspects of moduli stabilization in type IIB string theory
• What is the B mode in CMB polarization?
• Modified Supersymmetric Dark Sectors
• Qualitative analysis of Einstein-aether models with perfect fluid and scalar fields
• Receiver development for BICEP Array, a next-generation CMB polarimeter at the South Pole