Fermionic cosmologies with Yukawa type interactions

Details Fermionic cosmologies with Yukawa type interactions Fermionic cosmologies with Yukawa type interactions

2010-12-27

arxiv.org/abs/1012.5557v1

Europhys.Lett.93:19002,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 3 figures. To appear in Europhysics Letters

Scientific paper

10.1209/0295-5075/93/19002

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.

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