Leptogenesis from Spin-Gravity Coupling Following Inflation

Abstract

The energy levels of the left and the right handed neutrinos is split in the background of gravitational waves generated during inflation which in presence of lepton number violating interactions gives rise to a net lepton asymmetry at equilibrium. Lepton number violation is achieved by the same dimension five operator which gives rise to neutrino masses after electro-weak symmetry breaking. A net baryon asymmetry of the same magnitude can be generated from this lepton asymmetry by electroweak sphaleron processes.

Journal version (accepted for publication in Phys. Rev. Lett.)

References in corpus (9)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• A Measurement of Atmospheric Neutrino Oscillation Parameters by Super-Kamiokande I
• A limit on the detectability of the energy scale of inflation
• What Is The BBN Prediction for the Baryon Density and How Reliable Is It?
• Grand Unification, Gravitational Waves, and the Cosmic Microwave Background Anisotropy
• Leptogenesis and tensor polarisation from a gravitational Chern-Simons term
• On the Amount of Gravitational Waves from Inflation
• The Inflationary Gravity Waves in light of recent Cosmic Microwave Background Anisotropies data

Cited by in corpus (15)

• Baryogenesis in $f(R)$-Theories of Gravity
• Neutrino coupling to cosmological background: A review on gravitational Baryo/Leptogenesis
• Enhanced polarization of CMB from thermal gravitational waves
• Constraints on long-range spin-gravity and monopole-dipole couplings of the proton
• $f(R,T)$ models applied to Baryogenesis
• A dual-isotope rubidium comagnetometer to search for anomalous long-range spin-mass (spin-gravity) couplings of the proton
• Primordial magnetic fields and gravitational baryogenesis in nonlinear electrodynamics
• Lorentz violation dispersion relation and its application
• Constraining $f(T,\mathcal{T})$ Gravity with Gravitational Baryogenesis
• Gravitational Leptogenesis
• Probing Baryogenesis in $f(Q)$ gravity
• Consequences of f(R)-theories of gravity on gravitational leptogenesis
• Baryogenesis in quantum fluctuation modified gravity
• Geometric phase for Dirac Hamiltonian under gravitational fields in the non-relativistic regime
• Probing Leptogenesis and Pre-BBN Universe with Gravitational Waves Spectral Shapes