Non-Gaussian Features of Primordial Gravitational Waves
arXiv:1806.08178 · doi:10.1103/PhysRevD.98.083520
Abstract
We explore possible non-Gaussian features of primordial gravitational waves by constructing model-independent templates for nonlinearity parameters of tensor bispectrum. Our analysis is based on Effective Field Theory of inflation that relies on no particular model as such and thus the results are quite generic. The analysis further reveals that chances of detecting squeezed limit tensor bispectrum are fairly higher than equilateral limit. We also discuss prospects of detectability in upcoming CMB missions.
arXiv comment5 pages, 2 figures. To appear in Phys.Rev.D
References in corpus (19)
- Observation of Gravitational Waves from a Binary Black Hole Merger
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
- Non-Gaussian features of primordial fluctuations in single field inflationary models
- Generalized G-inflation: Inflation with the most general second-order field equations
- The Effective Field Theory of Inflation
- The Primordial Inflation Explorer (PIXIE): A Nulling Polarimeter for Cosmic Microwave Background Observations
- Effective Field Theory for Inflation
- Planck 2015 results. XVII. Constraints on primordial non-Gaussianity
- On graviton non-Gaussianities during inflation
- Mission design of LiteBIRD
- PRISM (Polarized Radiation Imaging and Spectroscopy Mission): An Extended White Paper
- Resilience of the standard predictions for primordial tensor modes
- The LiteBIRD Satellite Mission - Sub-Kelvin Instrument
- Parity Violation in Graviton Non-gaussianity
- An inflationary model with small scalar and large tensor nongaussianities
- Large Tensor Non-Gaussianity from Axion-Gauge Fields Dynamics
- Primordial non-Gaussianities of gravitational waves in the most general single-field inflation model
- Observed parity-odd CMB temperature bispectrum
Cited by in corpus (5)
- Multimessenger Cosmology: correlating CMB and SGWB measurements
- Tensor Non-Gaussianity Search: Current Status and Future Prospects
- Generic 3-point Statistics with Tensor Modes in Light of Swampland and TCC
- Enhanced tensor non-Gaussianities in presence of a source
- Tensor bispectrum mediated by an excited scalar field during inflation