Fermions as sources of accelerated regimes in cosmology

Details Fermions as sources of accelerated regimes in cosmology Fermions as sources of accelerated regimes in cosmology

2005-11-17

arxiv.org/abs/gr-qc/0511099v1

Phys.Rev. D72 (2005) 123502

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 figures, accepted in PRD

Scientific paper

10.1103/PhysRevD.72.123502

In this work it is investigated if fermionic sources could be responsible for accelerated periods during the evolution of a universe where a matter field would answer for the decelerated period. The self-interaction potential of the fermionic field is considered as a function of the scalar and pseudo-scalar invariants. Irreversible processes of energy transfer between the matter and gravitational fields are also considered. It is shown that the fermionic field could behave like an inflaton field in the early universe and as dark energy for an old universe.

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