Gravitational four-fermion interaction and dynamics of the early Universe
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 FriedmannLemaitre-Robertson-Walker 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.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- November 2013
- DOI:
- 10.1007/JHEP11(2013)174
- arXiv:
- arXiv:1303.1348
- Bibcode:
- 2013JHEP...11..174K
- Keywords:
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- Cosmology of Theories beyond the SM;
- Spacetime Singularities;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- General Relativity and Quantum Cosmology
- E-Print:
- 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