Gravitational four-fermion interaction in the early Universe

A.S. Rudenko^a, b, I.B. Khriplovich^a, b
^aBudker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, prosp. akad. Lavrenteva 11, Novosibirsk, 630090, Russian Federation
^bNovosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russian Federation

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 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 a Big Bounce.

PACS: 04.20.−q, 04.62.+v, 98.80.−k (all)
DOI: 10.3367/UFNe.0184.201402f.0177
URL: https://ufn.ru/en/articles/2014/2/f/
Web of Science

000336162000006
Scopus

2-s2.0-84900817693
ADS NASA

2014PhyU...57..167R
Citation: Rudenko A S, Khriplovich I B "Gravitational four-fermion interaction in the early Universe" Phys. Usp. 57 167–170 (2014)

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Received: 23rd, November 2013, accepted: 5th, June 2013

Оригинал: Руденко А С, Хриплович И Б «Гравитационное четырёхфермионное взаимодействие в ранней Вселенной» УФН 184 177–181 (2014); DOI: 10.3367/UFNr.0184.201402f.0177

I.Ya. Pomeranchuk is author of Physics-Uspekhi