Gravitational four-fermion interaction and dynamics of the early Universe
Cosmology and Nongalactic Astrophysics
2024-01-30 v4 General Relativity and Quantum Cosmology
Abstract
If torsion exists, it generates gravitational four-fermion interaction (GFFI), essential on the Planck scale. We analyze the influence of this interaction on the Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmology. Explicit analytical solution is derived for the problem where both the energy-momentum tensor generated by GFFI and the common ultrarelativistic energy-momentum tensor are included. We demonstrate that gravitational four-fermion interaction does not result in Big Bounce.
Keywords
Cite
@article{arxiv.1303.1348,
title = {Gravitational four-fermion interaction and dynamics of the early Universe},
author = {I. B. Khriplovich and A. S. Rudenko},
journal= {arXiv preprint arXiv:1303.1348},
year = {2024}
}
Comments
Axial-axial and vector-vector contributions have been recalculated: the AA contribution is 4 times larger than in previous calculations, the VV contribution is the same, the conclusions have not changed. arXiv admin note: text overlap with arXiv:1210.7306