Space-time curvature coupling of spinors in early universe: Neutrino asymmetry and a possible source of baryogenesis
arXiv:hep-ph/0510351 · doi:10.1142/S0217732306019542
Abstract
It is well known that when a fermion propagates in curved space-time, its spin couples to the curvature of background space-time. We propose that this interaction for neutrinos propagating in early curved universe could give rise to a new set of dispersion relations and then neutrino asymmetry at equilibrium. We demonstrate this with the Bianchi models which describe the homogeneous but anisotropic and axially symmetric universe. If the lepton number violating processes freeze out at 10^{-37} second when temperature T ~ 10^{15} GeV, neutrino asymmetry of the order of 10^{-10} can be generated. A net baryon asymmetry of the same magnitude can thus be generated from this lepton asymmetry either by a GUT B-L symmetry or by the electro-week sphaleron processes which have B+L symmetry.
arXiv comment9 RevTeX pages, no figure; Version to appear in Modern Physics Letters A
References in corpus (26)
- Lorentz-Violating Extension of the Standard Model
- CPT Violation and the Standard Model
- Gravity, Lorentz Violation, and the Standard Model
- High-Energy Tests of Lorentz Invariance
- Neutrinos in cosmology
- CPT, Strings, and Meson Factories
- CPT Violation Implies Violation of Lorentz Invariance
- Clock-Comparison Tests of Lorentz and CPT Symmetry in Space
- CPT Violation and Baryogenesis
- Past electron-positron g-2 experiments yielded sharpest bound on CPT violation for point particles
- Dark matter: A spin one half fermion field with mass dimension one?
- Lorentz and CPT Violation in the Neutrino Sector
- Constraining neutrino physics with BBN and CMBR
- Cosmological implications of a Relic Neutrino Asymmetry
- How Does CMB + BBN Constrain New Physics?
- Naturally Large Cosmological Neutrino Asymmetries in the MSSM
- New constraints on neutrino physics from Boomerang data
- Highest-energy cosmic rays from Fermi-degenerate relic neutrinos consistent with Super-Kamiokande results
- Neutrino asymmetry around black holes: Neutrinos interact with gravity
- Constraints on Neutrino Degeneracy from the Cosmic Microwave Background and Primordial Nucleosynthesis
- Charge conjugation and Lense-Thirring Effect: A new Asymmetry
- Behaviour of spin-1/2 particle around a charged black hole
- Experimental tests of curvature couplings of Fermions in General Relativity
- Bianchi II, VIII, and IX viscous fluid cosmology
- Spin--1/2 Particle in Gravitational Field of a Rotating Body
- Neutrino-Antineutrino Asymmetry around Rotating Black Holes
Cited by in corpus (20)
- Neutrino coupling to cosmological background: A review on gravitational Baryo/Leptogenesis
- Matter-antimatter asymmetry and dark matter from torsion
- Neutrino spin oscillations in gravitational fields
- CPT-Violating Leptogenesis induced by Gravitational Defects
- Environmental CPT Violation in an Expanding Universe in String Theory
- Gravity induced neutrino-antineutrino oscillation: CPT and lepton number non-conservation under gravity
- Gravitational Leptogenesis
- CPT and lepton number violation in neutrino sector: Modified mass matrix and oscillation due to gravity
- Light neutrino masses from a non-Hermitian Yukawa theory
- Quantum correlations in neutrino oscillations in curved spacetime
- Gravitational leptogenesis, C, CP and strong equivalence
- Gravity-Induced Geometric Phases and Entanglement in Spinors and Neutrinos: Gravitational Zeeman Effect
- CPT-odd Leptogenesis
- Theory Overview of Testing Fundamental Symmetries
- CPT invariance and neutrino physics
- Neutrinos in the Early Universe, Kalb-Ramond Torsion and Matter-Antimatter Asymmetry
- Probing the quantum speed limit and entanglement in flavor oscillations of neutrino-antineutrino system in curved spacetime
- Fermi Normal Coordinates and Fermion Curvature Couplings in General Relativity
- Influence of gravity on the quantum speed limit in neutrino oscillations
- Neutrino-Antineutrino Asymmetry From The Space-time Noncommutativity