Fermionic cosmologies with Yukawa type interactions
General Relativity and Quantum Cosmology
2011-02-02 v1 Cosmology and Nongalactic Astrophysics
Abstract
In this work we discuss if fermionic sources could be responsible for accelerated periods in a Friedmann-Robertson-Walker spatially flat universe, including a usual self-interaction potential of the Nambu-Jona-Lasinio type together with a fermion-scalar interaction potential of the Yukawa type. The results show that the combination of these potentials could promote an initially accelerated period, going through a middle decelerated era, with a final eternal accelerated period, where the self-interaction contribution dominates.
Cite
@article{arxiv.1012.5557,
title = {Fermionic cosmologies with Yukawa type interactions},
author = {Marlos O. Ribas and Fernando P. Devecchi and Gilberto M. Kremer},
journal= {arXiv preprint arXiv:1012.5557},
year = {2011}
}
Comments
4 pages, 3 figures. To appear in Europhysics Letters