Quantum Contributions to Cosmological Correlations

Abstract

The ``in-in'' formalism is reviewed and extended, and applied to the calculation of higher-order Gaussian and non-Gaussian correlations in cosmology. Previous calculations of these correlations amounted to the evaluation of tree graphs in the in-in formalism; here we also consider loop graphs. It turns out that for some though not all theories, the contributions of loop graphs as well as tree graphs depend only on the behavior of the inflaton potential near the time of horizon exit. A sample one-loop calculation is presented.

39 pages

References in corpus (16)

• Non-Gaussian features of primordial fluctuations in single field inflationary models
• Non-Gaussianity from Inflation: Theory and Observations
• A more accurate analytic calculation of the spectrum of cosmological perturbations produced during inflation
• Single field consistency relation for the 3-point function
• The Three--Point Correlation Function of the Cosmic Microwave Background in Inflationary Models
• Quantum effects can render w<-1 on cosmological scales
• Super-Acceleration from Massless, Minimally Coupled ${\varphi }^4$
• The Quantum Gravitational Back-Reaction On Inflation
• On non-gaussianities in single-field inflation
• Two Loop Scalar Self-Mass during Inflation
• One Loop Vaccum Polarization in a Locally de Sitter Background
• Production of Massless Fermions during Inflation
• Dynamical renormalization group approach to relaxation in quantum field theory
• Renormalization of initial conditions and the trans-Planckian problem of inflation
• Matter Contributions to the Expansion Rate of the Universe
• High order correlation functions for self interacting scalar field in de Sitter space

Cited by in corpus (657)

• Dark Energy
• Primordial Non-Gaussianities from Inflation Models
• Quasi-Single Field Inflation and Non-Gaussianities
• Tests of Lorentz invariance: a 2013 update
• Imprints of a Primordial Preferred Direction on the Microwave Background
• Signatures of Supersymmetry from the Early Universe
• On Soft Limits of Inflationary Correlation Functions
• Large non-Gaussianities with Intermediate Shapes from Quasi-Single Field Inflation
• Generation and Characterization of Large Non-Gaussianities in Single Field Inflation
• De Sitter Space and Eternity
• Quantum Contributions to Cosmological Correlations II: Can These Corrections Become Large?
• Enhanced Non-Gaussianity from Excited Initial States
• Galileon inflation
• Primordial perturbations and non-Gaussianities in DBI and general multi-field inflation
• Features and New Physical Scales in Primordial Observables: Theory and Observation
• Resonant Non-Gaussianity
• Signatures of Initial State Modifications on Bispectrum Statistics
• Super-Hubble de Sitter Fluctuations and the Dynamical RG
• Infrared effects in inflationary correlation functions
• A smooth bouncing cosmology with scale invariant spectrum
• On the one loop corrections to inflation and the CMB anisotropies
• Semiclassical relations and IR effects in de Sitter and slow-roll space-times
• Quasi-Single Field Inflation with Large Mass
• Predictions from an anisotropic inflationary era
• The Higgs field as an inflaton
• Stochastic Gravity: Theory and Applications
• The inflationary trispectrum
• Leading Log Solution for Inflationary Yukawa
• Observable non-gaussianity from gauge field production in slow roll inflation, and a challenging connection with magnetogenesis
• Breakdown of Semiclassical Methods in de Sitter Space
• Trans-Planckian Issues for Inflationary Cosmology
• A Mellin Space Approach to Cosmological Correlators
• Primordial Black Holes and Local Non-Gaussianity in Canonical Inflation
• Stochastic Gravity: Theory and Applications
• An Infinite Set of Ward Identities for Adiabatic Modes in Cosmology
• The Cosmological Optical Theorem
• Analyticity and Unitarity for Cosmological Correlators
• Lorentz Violation: Motivation and new constraints
• Large non-Gaussianity in multiple-field inflation
• Late-time Structure of the Bunch-Davies De Sitter Wavefunction
• Cosmological Cutting Rules
• Quantum Stability of a w < - 1 Phase of Cosmic Acceleration
• Inflation, Cosmic Perturbations and Non-Gaussianities
• One-loop corrections to the curvature perturbation from inflation
• Galilean symmetry in the effective theory of inflation: new shapes of non-Gaussianity
• Symmetries and Loops in Inflation
• Primordial non-Gaussianity from the DBI Galileons
• Primordial Power Spectra from Anisotropic Inflation
• Non-Gaussianity from Step Features in the Inflationary Potential
• The Fermion Self-Energy during Inflation
• One-loop corrections to a scalar field during inflation
• The "in-in" Formalism and Cosmological Perturbations
• On the One Loop Corrections to Inflation II: The Consistency Relation
• On Resumming Inflationary Perturbations beyond One-loop
• On the proper treatment of massless fields in Euclidean de Sitter space
• Curvature Perturbation Spectrum in Two-field Inflation with a Turning Trajectory
• Non-gaussianity from the trispectrum in general single field inflation
• Calculating the local-type fNL for slow-roll inflation with a non-vacuum initial state
• Parity breaking signatures from a Chern-Simons coupling during inflation: the case of non-Gaussian gravitational waves
• Heavy-Lifting of Gauge Theories By Cosmic Inflation
• Infrared dynamics in de Sitter space from Schwinger-Dyson equations
• Classical approximation to quantum cosmological correlations
• Equilateral non-Gaussianity from heavy fields
• An effective field theory during inflation: reduced density matrix and its quantum master equation
• Cosmological Fluctuations from Infra-Red Cascading During Inflation
• Non-Gaussianity and statistical anisotropy from vector field populated inflationary models
• Non-gaussianity from the bispectrum in general multiple field inflation
• Quantitative bispectra from multifield inflation
• Reply to `Can infrared gravitons screen $\Lambda$?'
• Cosmology With Many Light Scalar Fields: Stochastic Inflation and Loop Corrections
• Effective potential for quantum scalar fields on a de Sitter geometry
• Gravitons Enhance Fermions during Inflation
• Questions on calculation of primordial power spectrum with large spikes: the resonance model case
• Is a Higgs Vacuum Instability Fatal for High-Scale Inflation?
• Feynman Diagrams for Stochastic Inflation and Quantum Field Theory in de Sitter Space
• On Loops in Inflation II: IR Effects in Single Clock Inflation
• Large slow-roll corrections to the bispectrum of noncanonical inflation
• Quasi Single Field Inflation in the non-perturbative regime
• UV-protected (Natural) Inflation: Primordial Fluctuations and non-Gaussian Features
• On the full trispectrum in single field DBI-inflation
• Boostless Cosmological Collider Bootstrap
• Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Bispectrum
• Two loop stress-energy tensor for inflationary scalar electrodynamics
• Signals of a Quantum Universe
• Nonperturbative resummation of de Sitter infrared logarithms in the large-N limit
• On the Issue of the ζSeries Convergence and Loop Corrections in the Generation of Observable Primordial Non-Gaussianity in Slow-Roll Inflation. Part I: the Bispectrum
• Two Loop Scalar Bilinears for Inflationary SQED
• A Note on the Consistency Condition of Primordial Fluctuations
• Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Trispectrum
• Loops in inflationary correlation functions
• Massless interacting quantum fields in deSitter spacetime
• Constraining Primordial Black Hole Formation from Single-Field Inflation
• Field-theoretic derivation of bubble-wall force
• How Far Are We from the Quantum Theory of Gravity?
• Non-gaussianity and cosmic uncertainty in curvaton-type models
• Searches for other vacua II: A new Higgstory at the cosmological collider
• The cosmic microwave background bispectrum from the non-linear evolution of the cosmological perturbations
• Simple Bounds from the Perturbative Regime of Inflation
• Effects of parity violation on non-gaussianity of primordial gravitational waves in Hořava-Lifshitz gravity
• The radiative transfer at second order: a full treatment of the Boltzmann equation with polarization
• Quantum Gravity Corrections to the One Loop Scalar Self-Mass during Inflation
• Cosmological Bootstrap in Slow Motion
• One-loop Corrections to Scalar and Tensor Perturbations during Inflation in Stochastic Gravity
• Non-Gaussian perturbations from multi-field inflation
• A note on the role of the boundary terms for the non-Gaussianity in general k-inflation
• Inflation with moderately sharp features in the speed of sound: GSR and in-in formalism for power spectrum and bispectrum
• Chiral Primordial Gravitational Waves from Dilaton Induced Delayed Chromo-natural Inflation
• The Scalar Chemical Potential in Cosmological Collider Physics
• Primordial gravitational waves in supersolid inflation
• Inflationary tensor fossils in large-scale structure
• An effective field theory during inflation II: stochastic dynamics and power spectrum suppression
• De Sitter Diagrammar and the Resummation of Time
• On the validity of the perturbative description of axions during inflation
• Distinctive signatures of space-time diffeomorphism breaking in EFT of inflation
• Seeing Higher-Dimensional Grand Unification In Primordial Non-Gaussianities
• Fast Computation of Bispectrum Features with Generalized Slow Roll
• One-loop gravitational wave spectrum in de Sitter spacetime
• Perturbative Quantum Gravity Comes of Age
• Bootstrapping Multi-Field Inflation: non-Gaussianities from light scalars revisited
• Non-Gaussianity of quantum fields during inflation
• The Zeta-Zeta Correlator Is Time Dependent
• Scalar field correlator in de Sitter space at next-to-leading order in a 1/N expansion
• Quantum scalar fields in de Sitter space from the nonperturbative renormalization group
• Perturbative S-matrix for massive scalar fields in global de Sitter space
• Non-gaussianity of inflationary field perturbations from the field equation
• Renormalization group flow and symmetry restoration in de Sitter space
• Primordial fluctuations and non-Gaussianities from multifield DBI Galileon inflation
• Measuring chiral gravitational waves in Chern-Simons gravity with CMB bispectra
• Inflationary Correlation Functions without Infrared Divergences
• A parton picture of de Sitter space during slow-roll inflation
• Effective field theory of modified gravity with two scalar fields: dark energy and dark matter
• Parity-violating CMB correlators with non-decaying statistical anisotropy
• Phenomenology of fermion production during axion inflation
• Non-linear inflationary perturbations
• Quantum radiative corrections to slow-roll inflation
• The Effective Field Theory of Inflation Models with Sharp Features
• Correlation of inflation-produced magnetic fields with scalar fluctuations
• Squeezed bispectrum and one-loop corrections in transient constant-roll inflation
• Cosmological diagrammatic rules
• Parity-violating and anisotropic correlations in pseudoscalar inflation
• Planck-Suppressed Operators
• On the Physical Significance of Infra-red Corrections to Inflationary Observables
• Riemann correlator in de Sitter including loop corrections from conformal fields
• Localized correlated features in the CMB power spectrum and primordial bispectrum from a transient reduction in the speed of sound
• The inflationary bispectrum with curved field-space
• Cosmological 3-point correlators from holography
• Interacting Field Theories in de Sitter Space are Non-Unitary
• Linear Response, Hamiltonian and Radiative Spinning Two-Body Dynamics
• Stochastic Inflation at NNLO
• Scalar Field Equations from Quantum Gravity during Inflation
• On the full quantum trispectrum in multi-field DBI inflation
• Stress tensor fluctuations in de Sitter spacetime
• Non-Gaussian Enhancements of Galactic Halo Correlations in Quasi-Single Field Inflation
• A Simple Operator Check of the Effective Fermion Mode Function during Inflation
• Non-linear Realizations of Conformal Symmetry and Effective Field Theory for the Pseudo-Conformal Universe
• Cosmic microwave background bispectrum on small angular scales
• Cutting Rule for Cosmological Collider Signals: A Bulk Evolution Perspective
• Hyper non-Gaussianities in inflation with strongly non-geodesic motion
• One Loop Corrected Mode Functions for SQED during Inflation
• Inflationary Infrared Divergences: Geometry of the Reheating Surface vs. delta N Formalism
• IR divergences and kinetic equation in de Sitter space. (Poincare patch; Principal series)
• Effective field theory approach to modified gravity including Horndeski theory and Hořava-Lifshitz gravity
• The Graviton Propagator in de Donder Gauge on de Sitter Background
• Lorentz boost and non-Gaussianity in multi-field DBI-inflation
• Cosmological Scattering Equations
• A manifestly covariant theory of multifield stochastic inflation in phase space: solving the discretisation ambiguity in stochastic inflation
• Non-Gaussian Inflationary Perturbations from the dS/CFT Correspondence
• The effective field theory of inflation/dark energy and the Horndeski theory
• de Sitter limit of inflation and nonlinear perturbation theory
• Reconstructing the inflationary $f(R)$ from observations
• Large and strong scale dependent bispectrum in single field inflation from a sharp feature in the mass
• The Conformal Limit of Inflation in the Era of CMB Polarimetry
• Constraints on general second-order scalar-tensor models from gravitational Cherenkov radiation
• How Gaussian can our Universe be?
• Cosmological perturbations from stochastic gravity
• Cosmology in generalized Horndeski theories with second-order equations of motion
• Revisiting non-Gaussianity in multifield inflation with curved field space
• Numerical evaluation of the bispectrum in multiple field inflation
• Precision Calculation of Inflation Correlators at One Loop
• Metric fluctuations of an evaporating black hole from back reaction of stress tensor fluctuations
• Primordial Trispectrum from Entropy Perturbations in Multifield DBI Model
• Quantum Cosmological Correlations in an Inflating Universe: Can fermion and gauge fields loops give a scale free spectrum?
• A new method for calculating the primordial bispectrum in the squeezed limit
• Gravitational Production of Superheavy Dark Matter and Associated Cosmological Signatures
• On the IR Divergences in de Sitter Space: loops, resummation and the semi-classical wavefunction
• One-loop graviton corrections to the curvature perturbation from inflation
• Condensates and quasiparticles in inflationary cosmology: mass generation and decay widths
• The Källén-Lehmann representation in de Sitter spacetime
• Cosmological Signatures of Superheavy Dark Matter
• Closed-Form Formulae for Inflation Correlators
• Classicality of the primordial perturbations
• Predictions of quantum gravity in inflationary cosmology: effects of the Weyl-squared term
• Gravitational waves generated by second order effects during inflation
• Parity-Odd and Even Trispectrum from Axion Inflation
• Superluminality, Black Holes and Effective Field Theory
• Inflationary trispectrum from graviton exchange
• Inflationary soft theorems revisited: A generalized consistency relation
• Inflationary flavor oscillations and the cosmic spectroscopy
• Amplitudes meet Cosmology: A (Scalar) Primer
• Classical Cosmological Collider Physics and Primordial Features
• The graviton four-point function in de Sitter space
• Flattened non-Gaussianities from the effective field theory of inflation with imaginary speed of sound
• Vacuum Fluctuations of a Scalar Field during Inflation: Quantum versus Stochastic Analysis
• Bispectrum in Single-Field Inflation Beyond Slow-Roll
• Large Primordial Trispectra in General Single Field Inflation
• Stability of de Sitter spacetime under isotropic perturbations in semiclassical gravity
• Nonperturbative renormalization group for scalar fields in de Sitter space: beyond the local potential approximation
• The Hunt for Primordial Interactions in the Large Scale Structures of the Universe
• Non-Gaussian features of primordial magnetic fields in power-law inflation
• Curvature Perturbations in Anisotropic Inflation with Symmetry Breaking
• Cosmological UV/IR Divergences and de-Sitter Spacetime
• The Effective Theory of Inflation in the Standard Model of the Universe and the CMB+LSS data analysis
• A Simplified Quantum Gravitational Model of Inflation
• Primordial non-Gaussianities after Planck 2015: an introductory review
• Oscillatory features in the curvature power spectrum after a sudden turn of the inflationary trajectory
• Scale Dependent Local Non-Gaussianity from Loops
• Quantum Gravity: A Brief History of Ideas and Some Prospects
• Fermion Propagator in Cosmological Spaces with Constant Deceleration
• Stability of de Sitter spacetime against infrared quantum scalar field fluctuations
• Microcausality in Curved Space-Time
• On the squeezed limit of the bispectrum in general single field inflation
• NANOGrav signal from axion inflation
• Tensor non-Gaussianity in chiral scalar-tensor theories of gravity
• Non-linear sigma model in de Sitter space
• Large power spectrum and primordial black holes in the effective theory of inflation
• Real or Imaginary? (On pair creation in de Sitter space)
• Unitarity of quantum-gravitational corrections to primordial fluctuations in the Born-Oppenheimer approach
• Higher-order theories of gravity: diagnosis, extraction and reformulation via non-metric extra degrees of freedom
• Creating Statistically Anisotropic and Inhomogeneous Perturbations
• Consistency Relations for the Conformal Mechanism
• Backreaction and Stochastic Effects in Single Field Inflation
• A Phenomenological Model for the Early Universe
• Non-Gaussian Correlations Outside the Horizon
• Classical radiation by free-falling charges in de Sitter spacetime
• Collective Symmetry Breaking and Resonant Non-Gaussianity
• Imprints of Oscillatory Bispectra on Galaxy Clustering
• Dynamical RG and Critical Phenomena in de Sitter Space
• Spectroscopy of Masses and Couplings during Inflation
• Numerical 1-loop correction from a potential yielding ultra-slow-roll dynamics
• The Hartree approximation in curved spacetimes revisited I: the effective potential in de Sitter
• Issues Concerning Loop Corrections to the Primordial Power Spectra
• Anisotropic Inflation with the non-Vacuum Initial State
• Untangling features in the primordial spectra
• Infra-red effects of Non-linear sigma model in de Sitter space
• Inflationary signatures of single-field models beyond slow-roll
• Cosmology is not a Renormalization Group Flow
• Backreaction from non-conformal quantum fields in de Sitter spacetime
• $\alpha$-vacuum and inflationary bispectrum
• Non-Gaussianity of scalar perturbations generated by conformal mechanisms
• Markovian Dynamics in de Sitter
• Decoherence in an Interacting Quantum Field Theory: The Vacuum Case
• Heavy Spinning Particles from Signs of Primordial Non-Gaussianities: Beyond the Positivity Bounds
• Warm Quasi-Single Field Inflation
• The Conformal Transformation in General Single Field Inflation with Non-Minimal Coupling
• Higgs as heavy-lifted physics during inflation
• Strong scale dependent bispectrum in the Starobinsky model of inflation
• Quantum corrections to the primordial tensor spectrum: Open EFTs & Markovian decoupling of UV modes
• Decoherence and entropy of primordial fluctuations II. The entropy budget
• Ultraviolet Divergences in Cosmological Correlations
• Cosmological Scattering Equations at Tree-level and One-loop
• Testing Inflation and Curvaton Scenarios with CMB Distortions
• Fossilized Gravitational Wave Relic and Primordial Clocks
• Spontaneous symmetry breaking in inflationary cosmology: on the fate of Goldstone Bosons
• Clustering Fossils in Solid Inflation
• Inflationary power asymmetry from primordial domain walls
• Probing the inflationary particle content: extra spin-2 field
• Path Integral for Inflationary Perturbations
• Testing gaussianity, homogeneity and isotropy with the cosmic microwave background
• On spinning loop amplitudes in Anti-de Sitter space
• Analytical evaluation of cosmological correlation functions
• Primordial Statistical Anisotropies: The Effective Field Theory Approach
• Trispectrum from Ghost Inflation
• Heavy Particle Signatures in Cosmological Correlation Functions with Tensor Modes
• Summing Inflationary Logarithms in Nonlinear Sigma Models
• Probing Two-Field Open Inflation by Resonant Signals in Correlation Functions
• Gravitational Wave Probes of Massive Gauge Bosons at the Cosmological Collider
• The TT, TB, EB and BB correlations in anisotropic inflation
• Adiabatic Regularization for Gauge Field and the Conformal Anomaly
• Non-Gaussian corrections to the probability distribution of the curvature perturbation from inflation
• Backreaction of superhorizon scalar field fluctuations on a de Sitter geometry : a renormalisation group perspective
• Loop contributions to the scalar power spectrum due to quartic order action in ultra slow roll inflation
• Effects of discontinuities of the derivatives of the inflaton potential
• The δN formula is the dynamical renormalization group
• Squeezed tensor non-Gaussianity in non-attractor inflation
• Frame independent cosmological perturbations
• Pre-slow roll initial conditions: large scale power suppression and infrared aspects during inflation
• No time to derive: unraveling total time derivatives in in-in perturbation theory
• Lagrangian Formulation of Stochastic Inflation: A Recursive Approach
• Evolution and thermalization of dark matter axions in the condensed regime
• The Hubble Effective Potential
• Mixed Non-Gaussianity from Axion-Gauge Field Dynamics
• Effective field theory of modified gravity on the spherically symmetric background: leading order dynamics and the odd-type perturbations
• Observations in Quantum Cosmology
• Schwinger Mechanism During Inflation
• Disorder in the Early Universe
• Non-Gaussianities of Single Field Inflation with Non-minimal Coupling
• A new diagrammatic representation for correlation functions in the in-in formalism
• Soft Gravitons Screen Couplings in de Sitter Space
• Uniqueness of the gauge invariant action for cosmological perturbations
• Quantum Noise of Gravitons and Stochastic Force on Geodesic Separation
• Cosmological Density Fluctuations in Stochastic Gravity -- Formalism and Linear Analysis --
• Physical momentum representation of scalar field correlators in de Sitter space
• Lattice simulations of Abelian gauge fields coupled to axions during Inflation
• Massive scalar field in de Sitter spacetime: a two-loop calculation and a comparison with the stochastic approach
• Nonperturbative infrared enhancement of nonGaussian correlators in de Sitter space
• Constructing Infrared Finite Propagators in Inflating Space-time
• Double Soft Limits of Cosmological Correlations
• Tensor non-Gaussianities from Non-minimal Coupling to the Inflaton
• Cosmic Purity Lost: Perturbative and Resummed Late-Time Inflationary Decoherence
• Resilience of long modes in cosmological observables
• Non-Gaussianities in extended D-term inflation
• Qubits on the Horizon: Decoherence and Thermalization near Black Holes
• IR Divergences in Inflation and Entropy Perturbations
• Fluctuations of an evaporating black hole from back reaction of its Hawking radiation: Questioning a premise in earlier work
• Goldstone bosons and a dynamical Higgs field
• Renormalisation of IR divergences and holography in de Sitter
• Tensors and Spinors in de Sitter Space
• Propagators in de Sitter space
• Quantum Stress Tensor Fluctuations of a Conformal Field and Inflationary Cosmology
• Statistical Anisotropies in Gravitational Waves in Solid Inflation
• The Impact of Ultraviolet Regularization on the Spectrum of Curvature Perturbations During Inflation
• Consistency relations for sharp features in the primordial spectra
• The squeezed limit of the bispectrum in multi-field inflation
• Absence of one-loop effects on large scales from small scales in non-slow-roll dynamics II: Quartic interactions and consistency relations
• Direction dependence of the power spectrum and its effect on the Cosmic Microwave Background Radiation
• Second Order Gauge-Invariant Perturbations during Inflation
• Cosmic variance in inflation with two light scalars
• The structure of correlation functions in single field inflation
• A graviton propagator for inflation
• Quantum Field Theory based Quantum Information: Measurements and Correlations
• Soft Graviton effects on Gauge theories in de Sitter Space
• One-loop corrections to the power spectrum in general single-field inflation
• Effective Field Theory of non-Attractor Inflation
• Isocurvature Perturbations and Non-Gaussianity of Gravitationally Produced Nonthermal Dark Matter
• Effective action for the Abelian Higgs model in FLRW
• The effect of non-Gaussian curvature perturbations on the formation of primordial black holes
• Primordial cosmic fluctuations for variable gravity
• Proving the absence of large one-loop corrections to the power spectrum of curvature perturbations in transient ultra-slow-roll inflation within the path-integral approach
• Large Field Inflation and Gravitational Entropy
• Smooth Causal Patches for AdS Black Holes
• CFTs Blueshift Tensor Fluctuations Universally
• Effective Field Theories and Cosmological Scattering Equations
• Bayesian reconstruction of the inflaton's speed of sound using CMB data
• On Holography in General Background and the Boundary Effective Action from AdS to dS
• Primordial Non-Gaussianity of Gravitational Waves in Hořava-Lifshitz Gravity
• Hybrid Quasi-Single Field Inflation
• A Tree Theorem for Inflation
• de Sitter Space is Unstable in Quantum Gravity
• Why Must Primordial Non-Gaussianity Be Very Small?
• Effective gravitational interactions of dark matter axions
• Boltzmann equation in de Sitter space
• On the Decoherence of Primordial Gravitons
• Probing the initial state of inflation: analytical structure of cosmological correlators
• Higher derivatives and power spectrum in effective single field inflation
• Why should primordial perturbations be in a vacuum state?
• On Cross-correlations between Curvature and Isocurvature Perturbations during Inflation
• Roles of boundary and equation-of-motion terms in cosmological correlation functions
• New Shapes of Primordial Non-Gaussianity from Quasi-Single Field Inflation with Multiple Isocurvatons
• The Primordial Curvature Perturbation from Vector Fields of General non-Abelian Groups
• In-in formalism for the entropy of quantum fields in curved spacetimes
• Quantum gravity corrections to the conformally coupled scalar self-mass-squared on de Sitter II: kinetic-conformal cross terms
• CosmoFlow: Python Package for Cosmological Correlators
• Time transients in the quantum corrected Newtonian potential induced by a massless nonminimally coupled scalar field
• Tensor Bounds on the Hidden Universe
• Non-Gaussianity from Lifshitz Scalar
• A conformally coupled massive scalar field in the de Sitter expanding universe with the mass term treated as a perturbation
• Quantum gravity corrections to the conformally coupled scalar self-mass-squared on de Sitter background
• Cosmic fluctuations from quantum effective action
• Inflation with multiple vector fields and non-Gaussianities
• DBI Galileon in the Effective Field Theory of Inflation: Orthogonal non-Gaussianities and constraints from the Trispectrum
• Probing the Early Universe with the CMB Scalar, Vector and Tensor Bispectrum
• Gravitational waves from fermion production during axion inflation
• The Geometry of Cosmological Correlators
• The Separate Universe Approach to Soft Limits
• TASI Lectures on Primordial Cosmology
• Failure of Perturbation Theory Near Horizons: the Rindler Example
• The Kramers-Moyal Equation of the Cosmological Comoving Curvature Perturbation
• Inflation with Massive Vector Fields
• Loop corrections in Minkowski spacetime away from equilibrium. Part II. Finite-time results
• On degenerate models of cosmic inflation
• The scalar bi-spectrum during preheating in single field inflationary models
• Loop Corrections to Cosmological Perturbations in Multi-field Inflationary Models
• Tilt and Running of Cosmological Observables in Generalized Single-Field Inflation
• Regulating loops in de Sitter spacetime
• Fermionic Isocurvature Perturbations
• Non-Gaussianities in models of inflation with large and negative entropic masses
• Fermionic influence (action) on inflationary fluctuations
• Generalizing Starobinskii's Formalism to Yukawa Theory & to Scalar QED
• Robust predictions for an oscillatory bispectrum in Planck 2015 data from transient reductions in the speed of sound of the inflaton
• Renormalization group inspired autonomous equations for secular effects in de Sitter space
• Tachyon Mediated Non-Gaussianity
• Renormalisation group improvement in the stochastic formalism
• Tests of Quantum Gravity-Induced Non-Locality via Opto-mechanical Experiments
• Enhanced local-type inflationary trispectrum from a non-vacuum initial state
• Gravity Waves from Quantum Stress Tensor Fluctuations in Inflation
• The Wave Function of the Universe and CMB Fluctuations
• QFT in the flat chart of de Sitter space
• Origin of structure: Statistical characterization of the primordial density fluctuations and the collapse of the wave function
• A simple way to take into account back reaction on pair creation
• Scalar cosmological perturbations from inflationary black holes
• The Quantum Corrected Mode Function and Power Spectrum for a Scalar Field during Inflation
• CMB probes on the correlated axion isocurvature perturbation
• Charged Vector Inflation
• On the initial condition of inflationary fluctuations
• Where does Cosmological Perturbation Theory Break Down?
• Rational Wavefunctions in de Sitter Spacetime
• Quantum Effects of Mass on Scalar Field Correlations and Fluctuations during Inflation
• Universality in generalized models of inflation
• Quantum Cosmology Near Two Dimensions
• On the Trispectrum of Galileon Inflation
• Numerical evaluation of inflationary 3-point functions on curved field space
• Towards Systematic Evaluation of de Sitter Correlators via Generalized Integration-By-Parts Relations
• Regularizing infrared divergences in de Sitter spacetime: Loops, dimensional regularization, and cutoffs
• String Perturbation Theory on the Schwinger-Keldysh Time Contour
• Probing quantum gravity effects with quantum mechanical oscillators
• Quantum corrections for spinning particles in de Sitter
• IR Divergence in Inflationary Tensor Perturbations from Fermion Loops
• A Modal Approach to the Numerical Calculation of Primordial non-Gaussianities
• Non-Gaussianity of a single scalar field in general covariant Hořava-Lifshitz gravity
• Gauge-invariant perturbations at second order in two-field inflation
• Magnetogenesis and the primordial non-gaussianity
• KLT-Like Behaviour of Inflationary Graviton Correlators
• Conservation of superhorizon curvature perturbations at one loop: Backreaction in the in-in formalism and Renormalization
• Primordial Density Perturbations and Reheating from Gravity
• Cosmological Particle Production and Pairwise Hotspots on the CMB
• Inflaton Two-Point Correlation in the Presence of a Cosmic String
• On $i\epsilon$ Prescription in Cosmology
• Mixed Graviton and Scalar Bispectra in the EFT of Inflation: Soft Limits and Boostless Bootstrap
• Primordial Stochastic Gravitational Wave Background Anisotropies: in-in Formalization and Applications
• Quantum Weyl Invariance and Cosmology
• Gravitational waves in ultra-slow-roll and their anisotropy at two loops
• Effective field theory of statistical anisotropies for primordial bispectrum and gravitational waves
• The scalar modes of the relic gravitons
• Power-law modulation of the scalar power spectrum from a heavy field with a monomial potential
• Infrared finite scattering theory: Amplitudes and soft theorems
• Inflaton decay and reheating in nonminimal derivative coupling
• Consistency relations in multi-field inflation
• Strong restriction on inflationary vacua from the local gauge invariance III: Infrared regularity of graviton loops
• How Inflationary Gravitons Affect Gravitational Radiation
• Cosmology using numerical relativity
• Inflationary Adler Conditions
• The Massive Flat Space Limit of Cosmological Correlators
• On the equation-of-motion versus in-in approach in cosmological perturbation theory
• Unequal time correlators of stochastic scalar fields in de Sitter space
• Soft theorems for boosts and other time symmetries
• Non-Gaussianities in a two-field generalization of Natural Inflation
• Axion inflation with cross-correlated axion isocurvature perturbations
• Trans-Planckian enhancements of the primordial non-Gaussianities
• Perturbative region on non-Gaussian parameter space in single-field inflation
• Quantum Larmor radiation in conformally flat universe
• Non-Gaussian features from the inverse volume corrections in loop quantum cosmology
• Non-Gaussianity from $X,Y$ gauge bosons in Cosmological Collider Physics
• Evolution of Non-linear Fluctuations in Preheating after Inflation
• Cosmological Condensation of Scalar Fields -- Making a dark energy
• Entangled Scalar and Tensor Fluctuations during Inflation
• Quadratic Isocurvature Cross-Correlation, Ward Identity, and Dark Matter
• Gravitational waves induced by spinor fields
• Three-dimensional de Sitter holography and bulk correlators at late time
• Entropy production in inflation from spectator loops
• Role of the counterterms in the conservation of superhorizon curvature perturbations at one loop
• The Cosmological Slavnov-Taylor Identity from BRST Symmetry in Single-Field Inflation
• Anisotropic non-gaussianity with noncommutative spacetime
• Relativistic invariance of the vacuum
• Massless minimal quantum scalar field with an asymmetric self interaction in de Sitter spacetime
• Damped Corrections to Inflationary Spectra from a Fluctuating Cutoff
• Towards the physical vacuum of cosmic inflation
• Scalar Bispectrum Beyond Slow-Roll in the Unified EFT of Inflation
• Grand Unification at the Cosmological Collider with Chemical Potential
• Coupled scalar fields in a flat FRW universe: renormalisation
• Localized Excitations from Localized Unitary Operators
• Primordial anisotropies from cosmic strings during inflation
• Primordial Tensor Non-Gaussianity from Massive Gravity
• First-order quantum correction to the Larmor radiation from a moving charge in a spatially homogeneous time-dependent electric field
• On primordial trispectrum from exchanging scalar modes in general multiple field inflationary models
• Non-perturbative analysis for a massless minimal quantum scalar with $V(\varphi )=\lambda {\varphi }^4/4!+\beta {\varphi }^3/3!$ in the inflationary de Sitter spacetime
• Alternate Definitions of Loop Corrections to the Primordial Power Spectra
• Primordial inhomogeneities from massive defects during inflation
• Primordial Clocks within Stochastic Gravitational Wave Anisotropies
• Hartree approximation in curved spacetimes revisited II: The semiclassical Einstein equations and de Sitter self-consistent solutions
• New Interpretations of the Cosmological Preference for a Negative Neutrino Mass
• Cosmology from String T-duality and zero-point length
• Quantum corrections to inflaton dynamics, the semi-classical approach and the semi-classical limit
• Bispectrum at 1-loop in the Effective Field Theory of Inflation
• Radiative Corrections from Heavy Fast-Roll Fields during Inflation
• Quantum corrections during inflation and conservation of adiabatic perturbations
• Non-Gaussianity in rapid-turn multi-field inflation
• Out of time ordered effective dynamics of a quartic oscillator
• Quantum Modifications to Gravity Waves in de Sitter Spacetime
• Power spectrum nulls due to non-standard inflationary evolution
• On Quantum Simulation Of Cosmic Inflation
• General Covariance Constraints on Cosmological Correlators
• A Flat Space Analogue for the Quantum Origin of Structure
• Eliminating infrared divergences in an inflationary cosmology
• Perturbation Spectra and Renormalization-Group Techniques in Double-Field Inflation and Quantum Gravity Cosmology
• Stationary Phase Approximation and Instanton-like States for Cosmological In-In Path Integrals
• Closed time path approach to the Casimir energy in real media
• Non-commutative Geometry from Perturbative Quantum Gravity in de Sitter spacetime
• The Scalar Field Kernel in Cosmological Spaces
• Correlation Functions of Massless Interacting Scalar Fields in de Sitter Space
• de Sitter duality and logarithmic decay of dark energy
• Renormalizing an initial state
• De Sitter Quantum Loops as the origin of Primordial Non-Gaussianities
• Gravity and non-gravity mediated couplings in multiple-field inflation
• Trans-Planckian signals from the breaking of local Lorentz invariance
• A falsely fat curvaton with an observable running of the spectral tilt
• Non-Gaussianity from Entanglement During Inflation
• Non-Gaussianity in DHOST inflation
• Bananas are Unparticles: Differential Equations and Cosmological Bootstrap
• Charged Loops at the Cosmological Collider with Chemical Potential
• On the Expected Production of Gravitational Waves During Preheating
• Renormalization in Open Quantum Field theory I: Scalar field theory
• One loop corrected conformally coupled scalar mode equations during inflation
• Loop corrections to primordial fluctuations from inflationary phase transitions
• The anisotropy of a three- and a one-form
• On the Expected Backreaction During Preheating
• More on loops in reheating: Non-gaussianities and tensor power spectrum
• Loops in reheating and cosmological perturbations
• Abelian Higgs model in power-law inflation: the propagators in the unitary gauge
• One-loop Graviton Corrections to Conformal Scalars on a de Sitter Background
• Lorentz breaking Effective Field Theory and observational tests
• The cosmological collider in $R^2$ inflation
• Inflaton fluctuations in the presence of cosmological defects
• Testing an Ansatz for the Leading Secular Loop Corrections from Quantum Gravity during Inflation
• Statistical anisotropy from inflationary magnetogenesis
• Loop-Induced Stochastic Bias at Small Wavevectors
• BRST Quantization of Cosmological Perturbations
• Halo/Galaxy Bispectrum with Equilateral-type Primordial Trispectrum
• Decelerating cosmologies are de-scramblers
• One-loop corrections to the primordial tensor spectrum from massless isocurvature fields
• Cosmological Correlators, In-In Formalism and Double Copy
• Non-Standard Primordial Clocks from Dynamical Mass in Alternative to Inflation Scenarios
• Non-Gaussianities in DBI inflation with angular motion
• Schwinger effect in compact space: a real time calculation
• Quantum Larmor radiation from a moving charge in an electromagnetic plane wave background
• Numerical prescriptions of early-time divergences of the in-in formalism
• Field diffeomorphisms and the algebraic structure of perturbative expansions
• Late-time Structure of the Bunch-Davies FRW Wavefunction
• A Causal Alternative to Feynman's Propagator
• Quantum (in)stability of maximally symmetric space-times
• The Physical Content of Long Tensor Modes in Cosmology
• Constraint on ghost-free bigravity from gravitational Cherenkov radiation
• Non-gaussianities for primordial black hole formation
• Late-time correlation functions in dS${}_3$/CFT${}_2$ correspondence
• Initial states and infrared physics in locally de Sitter spacetime
• Perelman's Ricci Flow in Topological Quantum Gravity
• Statistically-Anisotropic Tensor Bispectrum from Inflation
• Entropy Generation at the Horizon Diffuses Cosmological Constant in 2D de Sitter Space
• Towards a Field-Theory based Relativistic Quantum Information
• Scale invariance of the primordial tensor power spectrum
• Non-Gaussian statistics of de Sitter spectators: A perturbative derivation of stochastic dynamics
• On the breakdown of the curvature perturbation ζ during reheating
• Inflationary non-Gaussianities in alpha vacua and consistency with conformal symmetries
• Soft Limits of Gluon and Graviton Correlators in Anti-de Sitter Space
• Breaking parity: the case of the trispectrum from chiral scalar-tensor theories of gravity
• Quantitative classicality in cosmological interactions during inflation
• B-modes and the sound speed of primordial fluctuations
• Superhorizon Electromagnetic Field Background from Higgs Loops in Inflation
• When Does the Inflaton Decay?
• Quantum Cosmology in Four Dimensions
• On the consistency of (partially-)massless matter couplings in de Sitter space
• Loop corrections to primordial non-Gaussianity
• Observable Quantum Loop Effects in the Sky
• The Functional Measure for the In-In Path Integral
• Optimal bispectrum constraints on single-field models of inflation
• Is cosmological constant screened in Liouville gravity with matter?
• Connections between Minkowski and Cosmological Correlation Functions
• Impact of transforming to Conformal Fermi Coordinates on Quasi-Single Field Non-Gaussianity
• Particle propagation in cosmological backgrounds
• Vector field instability and the primordial tensor spectrum
• Initial value formulation of a quantum damped harmonic oscillator
• Quasiparticle excitations in relativistic quantum field theory
• Does Planck Actually "See" the Bunch-Davies State?
• Bubble nucleation and inflationary perturbations
• Quantum Stress Tensor Fluctuations and Primordial Gravity Waves
• Notes on weight-shifting operators and unifying relations for cosmological correlators
• Non-gaussianity and Statistical Anisotropy in Cosmological Inflationary Models
• Gravitational-wave implications for structure formation: A second-order approach
• Loop effects and infrared divergences in slow-roll inflation
• Big Steve and the State of the Universe
• In-in correlators and scattering amplitudes on a causal set
• Broken scale invariance, $\alpha$-attractors and vector impurity
• Primordial non-Gaussianities produced by features in the potential of single slow-roll inflationary models
• Imprints of Schwinger Effect on Primordial Spectra
• Non-Gaussianity of Inflationary Gravitational Waves from the Field Equation
• Entanglement Entropy with a Time-dependent Hamiltonian
• On the prospects of thermalization of axion-SU(2) inflation
• Cosmological Non-Gaussianity from Neutrino Seesaw Mechanism
• Probing Inflation with Precision Bispectra
• Tensor bispectrum mediated by an excited scalar field during inflation
• Cosmological Signatures of Neutrino Seesaw Mechanism
• In-in formalism, pseudo-instantons and rethinking quantum cosmology
• QFT approach to dressed particle processes in preheating and non-perturbative mechanism in kinematically-forbidden regime
• Localization of particles in quantum field theory
• Comment on "Fermion production in a magnetic field in a de Sitter universe"
• Derivative Interactions during Inflation: A Systematic Approach
• Higher order spectra from an initially anisotropic universe
• Perturbative quantum damping of cosmological expansion
• Entropy mode loops and cosmological correlations during perturbative reheating
• Loops in inflation with strongly non-geodesic motion
• Issues about Cosmological Ward Identities
• Effective Field Theory for Inflation
• Quantum Brownian representation for the quantum field modes
• Quantum Stress Tensor Fluctuation Effects in Inflationary Cosmology
• On counterterms in cosmological perturbation theory
• Observable predictions of generalised inflationary scenarios
• Probability Density Functionals in Perturbation Theory within the QFT in-in Formalism
• Inflationary tensor fossils deformed by solid matter -- scalar field interaction
• Operator Method and Recursion Relations for Inflationary Correlator
• RG flows in de Sitter: c-functions and sum rules
• Correlation of isocurvature perturbation and non-Gaussianity
• Bunch-Davies initial conditions and non-perturbative inflationary dynamics in Numerical Relativity
• Generating Entangled Inflationary Quantum States
• A Match Made in Heaven: Linking Observables in Inflationary Cosmology
• Adiabatic regularization of functional determinants in cosmology and radiative corrections during inflation
• Inflation driven by scalar field and solid matter
• Stochastic Inflation with Interacting Noises
• Cosmological correlation functions in scalar and vector inflationary models
• A field theory characterization of interacting adiabatic particles in cosmology
• Adiabatic Duality: Duality of cosmological models with varying slow-roll parameter and sound speed
• Imprints of Anisotropy on the Power Spectrum in Matter Dominated Bouncing Universe as Background
• On the four-dimensional effective theories in brane-worlds
• Effective dynamics of quantum fluctuations in field theory: with applications to cosmology
• Fluctuations in the stress energy tensor of spinor fields evolving in general FRW spacetimes
• Inflationary cross-correlations of a non-minimal spectator and their soft limits
• Non-linear effects in early Universe cosmology
• The four-point correlation function of graviton during inflation
• In-in formalism on tunneling background: multi-dimensional quantum mechanics
• Amplifying the Cosmological Collider with Ghost Spectators
• Dilaton, Screening of the Cosmological Constant and IR-Driven Inflation
• Back-reaction in massless de Sitter QFTs: holography, gravitational DBI action and f(R) gravity
• Schrödinger field theory in curved spacetime: In-In formalism and three-point function for inflationary background
• Infrared Logarithms in Minisuperspace Inflation
• Noncommutative spacetime geometry and one-loop effects in primordial cosmology
• A (semi)-exact Hamiltonian for the curvature perturbation $\zeta$
• Heavy Fermion Production and Primordial N-Spectra
• Non-Gaussianity in D3-brane inflation
• Semiclassical Length Measure from a Quantum-Gravity Wave Function
• Manifestly Unitary Cosmological Perturbation Theory
• New leading contributions to non-gaussianity in single field inflation
• Isocurvature Constraints and Gravitational Ward Identity
• Chern-Simons gravitational term coupled to a spectator field
• The Black Hole Window on Cosmic Inflation
• Cosmological signatures of brane inflation
• Vacuum zero point energy of self-interacting quantum fields in dS background
• Non-relativistic Cosmological Collider Signals
• Non-Gaussianity in Cosmology: from Inflation to the CMB
• Scale-dependence in DHOST inflation
• Separate universe in multifield inflation: a phase-space approach
• Loop contribution to inflationary magnetic field
• Wormhole Solutions and Pre-inflationary Epoch in $F(R,T)$ Gravity with Axion Fields
• The expectation value of the field operator
• Massive holographic QFTs in de Sitter
• Sub-Leading Logarithms for Scalar Potential Models on de Sitter
• Primordial density fluctuations generated by wormholes
• Transition Amplitudes in de Sitter Space
• Primordial gravitational waves from excited states
• On the importance of heavy fields in pseudo-scalar inflation