Chiral primordial blue tensor spectra from the axion-gauge couplings
arXiv:1612.08817 · doi:10.1088/1475-7516/2017/06/050
Abstract
We suggest the new feature of primordial gravitational waves sourced by the axion-gauge couplings, whose forms are motivated by the dimensional reduction of the form field in the string theory. In our inflationary model, as an inflaton we adopt two types of axion, dubbed the model-independent axion and the model-dependent axion, which couple with two gauge groups with different sign combination each other. Due to these forms both polarization modes of gauge fields are amplified and enhance both helicies of tensor modes during inflation. We point out the possibility that a primordial blue-tilted tensor power spectra with small chirality are provided by the combination of these axion-gauge couplings, intriguingly both amplitudes and chirality are potentially testable by future space-based gravitational wave interferometers such as DECIGO and BBO project.
References in corpus (49)
- String Axiverse
- Axions In String Theory
- Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
- Beyond LISA: Exploring Future Gravitational Wave Missions
- BICEP2 / Keck Array VI: Improved Constraints On Cosmology and Foregrounds When Adding 95 GHz Data From Keck Array
- Completing Natural Inflation
- Large Nongaussianity in Axion Inflation
- Gauge Field Production in Axion Inflation: Consequences for Monodromy, non-Gaussianity in the CMB, and Gravitational Waves at Interferometers
- Naturally inflating on steep potentials through electromagnetic dissipation
- Chiral Primordial Gravitational Waves from a Lifshitz Point
- Couplings and Scales in Strongly Coupled Heterotic String Theory
- Parity violation in the Cosmic Microwave Background from a pseudoscalar inflaton
- Phenomenology of a Pseudo-Scalar Inflaton: Naturally Large Nongaussianity
- Direct detection of the inflationary gravitational wave background
- Gravitational waves at interferometer scales and primordial black holes in axion inflation
- Circular Polarization of Primordial Gravitational Waves in String-inspired Inflationary Cosmology
- Gauge field production in SUGRA inflation: local non-Gaussianity and primordial black holes
- Loop-Corrected Compactifications of the Heterotic String with Line Bundles
- Gravity waves and non-Gaussian features from particle production in a sector gravitationally coupled to the inflaton
- Scale-dependent gravitational waves from a rolling axion
- Gauge Fields and Inflation: Chiral Gravitational Waves, Fluctuations and the Lyth Bound
- Primordial Gravitational Waves from Axion-Gauge Fields Dynamics
- Non-Gaussianities and chiral gravitational waves in natural steep inflation
- Perturbations in Chromo-Natural Inflation
- Stability analysis of chromo-natural inflation and possible evasion of Lyth's bound
- Higher Curvature Corrections to Primordial Fluctuations in Slow-roll Inflation
- Primordial gravitational waves for universality classes of pseudoscalar inflation
- Axion Inflation with an SU(2) Gauge Field: Detectable Chiral Gravity Waves
- Blue Tensor Spectrum from Particle Production during Inflation
- Rolling axions during inflation: perturbativity and signatures
- Aligned Natural Inflation in String Theory
- A numerical study of pseudoscalar inflation with an axion-gauge field coupling
- Axions and the Strong CP Problem in M-theory
- Universal Constraints on Axions from Inflation
- Polarizing primordial gravitational waves by parity violation
- On the validity of the perturbative description of axions during inflation
- The hybrid inflation waterfall and the primordial curvature perturbation
- Multi-Natural Inflation in Supergravity
- Quest for circular polarization of gravitational wave background and orbits of laser interferometers in space
- Hierarchical Axion Inflation
- Dissipative Axial Inflation
- Combining Universal and Odd RR Axions for Aligned Natural Inflation
- Oscillating Chiral Tensor Spectrum from Axionic Inflation
- Large Field Inflation from Axion Mixing
- Widening the Axion Window via Kinetic and Stückelberg Mixings
- Natural inflation with and without modulations in type IIB string theory
- Chirality oscillation of primordial gravitational waves during inflation
- Towards natural inflation from weakly coupled heterotic string theory
- Natural Inflation from Near Alignment in Heterotic String Theory
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- Primordial gravitational waves from NANOGrav: a broken power-law approach
- Baryon Asymmetry and Gravitational Waves from Pseudoscalar Inflation
- Propagation of the gravitational waves in a cosmological background
- Implications of Gravitational-wave Production from Dark Photon Resonance to Pulsar-timing Observations and Effective Number of Relativistic Species
- Broken blue-tilted inflationary gravitational waves: a joint analysis of NANOGrav 15-year and BICEP/Keck 2018 data
- Gravitational wave background from non-Abelian reheating after axion-like inflation
- Mixed Non-Gaussianity from Axion-Gauge Field Dynamics
- Statistically Anisotropic Tensor Modes from Inflation
- Footprint of Two-Form Field: Statistical Anisotropy in Primordial Gravitational Waves
- Generating enhanced parity-violating gravitational waves during inflation with violation of the null energy condition
- Generation of Primordial Black Holes and Gravitational Waves from Dilaton-Gauge Field Dynamics
- Dissecting the Stochastic Gravitational Wave Background with Astrometry
- Generating enhanced primordial GWs during inflation with intermittent violation of NEC and diminishment of GW propagating speed
- Parity-violation in bouncing cosmology
- Parity-violating scalar trispectrum from a rolling axion during inflation
- Gravitational wave trispectrum in the axion-SU(2) model
- Universality of linear perturbations in SU()-natural inflation
- Probing Parity Violation in the Stochastic Gravitational Wave Background with Astrometry
- Parity violation in primordial tensor non-Gaussianities from matter bounce cosmology