Chiral gravitational waves from thermalized neutrinos in the early Universe
arXiv:2205.10516 · doi:10.1088/1475-7516/2022/09/025
Abstract
We investigate polarized gravitational waves generated by chiral fermions in the early Universe. In particular, we focus on the contribution from left-handed neutrinos in thermal equilibrium with finite temperature and chemical potential in the radiation dominated era. We compute the correlation functions of gravitational fields pertinent to the Stokes parameter characterizing the circular polarization of gravitational waves in the Minkowski and expanding spacetime backgrounds. In the expanding universe, we find that the thermalized neutrinos induce a non-vanishing linear to the neutrino degeneracy parameter and wavenumber of gravitational waves in the long wavelength region. While the magnitude of the gravitational waves generated by thermal neutrinos is too small to be detectable by current and planned third generation gravitational wave detectors, their observations by future generation detectors for ultra-high frequency regimes could provide information on the neutrino degeneracy parameter in the early Universe.
arXiv comment37 pages, 1 figure; published version
References in corpus (51)
- Observation of Gravitational Waves from a Binary Black Hole Merger
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- Advanced LIGO
- Cosmological Backgrounds of Gravitational Waves
- Gravitational-wave sensitivity curves
- Cosmological Signature of New Parity-Violating Interactions
- Primordial Magnetic Fields, Right Electrons, and the Abelian Anomaly
- Search for the isotropic stochastic background using data from Advanced LIGO's second observing run
- Particle production during inflation and gravitational waves detectable by ground-based interferometers
- Damping of Tensor Modes in Cosmology
- Parity violation in the Cosmic Microwave Background from a pseudoscalar inflaton
- Tensor Perturbations in Inflationary Models as a Probe of Cosmology
- Chiral Plasma Instabilities
- The Standard Model cross-over on the lattice
- Circular Polarization of Primordial Gravitational Waves in String-inspired Inflationary Cosmology
- On Effective Degrees of Freedom in the Early Universe
- Probing reheating temperature of the universe with gravitational wave background
- Gauge Fields and Inflation: Chiral Gravitational Waves, Fluctuations and the Lyth Bound
- Birefringent Gravitational Waves and the Consistency Check of Inflation
- Neutrinos And Big Bang Nucleosynthesis
- Testing Parity-Violating Mechanisms with Cosmic Microwave Background Experiments
- Upper limits on the amplitude of ultra-high-frequency gravitational waves from graviton-photon mixing
- Gravitational Waves as a Big Bang Thermometer
- Lepton asymmetry and primordial nucleosynthesis in the era of precision cosmology
- Chiral transport of neutrinos in supernovae: Neutrino-induced fluid helicity and helical plasma instability
- Gravitational wave background from Standard Model physics: Qualitative features
- Search for a stochastic background of 100-MHz gravitational waves with laser interferometers
- Leptogenesis and tensor polarisation from a gravitational Chern-Simons term
- EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-Poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension
- Gravitational wave background from Standard Model physics: Complete leading order
- Polarization analysis of gravitational-wave backgrounds from the correlation signals of ground-based interferometers: measuring a circular-polarization mode
- Probing GHz Gravitational Waves with Graviton-magnon Resonance
- Lecture Notes in Cosmology
- Chiral Primordial Gravitational Waves from Dilaton Induced Delayed Chromo-natural Inflation
- Relic density of neutrinos with primordial asymmetries
- Measuring the net circular polarization of the stochastic gravitational wave background with interferometers
- Chiral Gravity Waves and Leptogenesis in Inflationary Models with non-Abelian Gauge Fields
- String theoretic axion coupling and the evolution of cosmic structures
- Wash-In Leptogenesis
- Lepton Asymmetric Universe
- Circular Polarization of Gravitational Waves from Early-Universe Helical Turbulence
- Hubble tension in lepton asymmetric cosmology with an extra radiation
- Circular polarizations of gravitational waves from core-collapse supernovae: a clear indication of rapid rotation
- Chiral Radiation Transport Theory of Neutrinos
- Chiral Gravitational Waves Produced in a Helical Magnetogenesis Model
- Searching for parity violation with the LIGO-Virgo-KAGRA network
- Chiral plasma instability and primordial Gravitational wave
- Chiral Gravitational Waves from Chiral Fermions
- Chiral gravitational effect in time-dependent backgrounds
- Gravitational Instabilities of the Cosmic Neutrino Background with Non-zero Lepton Number
- Overview of KAGRA : KAGRA science