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Title: Fermions as sources of accelerated regimes in cosmology

Abstract

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 pseudoscalar 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.

Authors:
; ;  [1];  [2]
  1. Faculdades Integradas Espirita, Rua Tobias de Macedo Jr. 333, 82010-340 Curitiba (Brazil) and Departamento de Fisica, Universidade Federal do Parana, Caixa Postal 19044, 81531-990 Curitiba (Brazil)
  2. (Brazil)
Publication Date:
OSTI Identifier:
20774500
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 12; Other Information: DOI: 10.1103/PhysRevD.72.123502; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSMOLOGY; ENERGY TRANSFER; FERMIONS; GRAVITATIONAL FIELDS; IRREVERSIBLE PROCESSES; NONLUMINOUS MATTER; PARTICLE INTERACTIONS; POTENTIALS; SCALARS; UNIVERSE

Citation Formats

Ribas, M.O., Devecchi, F.P., Kremer, G.M., and Departamento de Fisica, Universidade Federal do Parana, Caixa Postal 19044, 81531-990 Curitiba. Fermions as sources of accelerated regimes in cosmology. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.123502.
Ribas, M.O., Devecchi, F.P., Kremer, G.M., & Departamento de Fisica, Universidade Federal do Parana, Caixa Postal 19044, 81531-990 Curitiba. Fermions as sources of accelerated regimes in cosmology. United States. doi:10.1103/PhysRevD.72.123502.
Ribas, M.O., Devecchi, F.P., Kremer, G.M., and Departamento de Fisica, Universidade Federal do Parana, Caixa Postal 19044, 81531-990 Curitiba. Thu . "Fermions as sources of accelerated regimes in cosmology". United States. doi:10.1103/PhysRevD.72.123502.
@article{osti_20774500,
title = {Fermions as sources of accelerated regimes in cosmology},
author = {Ribas, M.O. and Devecchi, F.P. and Kremer, G.M. and Departamento de Fisica, Universidade Federal do Parana, Caixa Postal 19044, 81531-990 Curitiba},
abstractNote = {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 pseudoscalar 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.},
doi = {10.1103/PhysRevD.72.123502},
journal = {Physical Review. D, Particles Fields},
number = 12,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}