An unified cosmological evolution driven by a mass dimension one fermionic field

Autor(es)

Pereira, S. H. ^[1] ; Alves, M. E. S. ^[2] ; Guimaraes, T. M. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Fac Engn Guaratingueta, Dept Fis & Quim, BR-12516410 Guaratingueta, SP - Brazil

^[2] Univ Estadual Paulista UNESP, Inst Ciencia & Tecnol, BR-12247004 Sao Jose Dos Campos, SP - Brazil

^[3] Inst Fed Parana, Campus Ivaipora, BR-86870000 Ivaipora, PR - Brazil

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL C; v. 79, n. 6 JUN 26 2019.
• Citações Web of Science: 1

Resumo

An unified cosmological model for an Universe filled with a mass dimension one (MDO) fermionic field plus the standard matter fields is considered. After a primordial quantum fluctuation the field slowly rolls down to the bottom of a symmetry breaking potential, driving the Universe to an inflationary regime that increases the scale factor for about 71 e-folds. After the end of inflation, the field starts to oscillate and can transfer its energy to the standard model particles through a reheating mechanism. Such a process is briefly discussed in terms of the admissible couplings of the MDO field with the electromagnetic and Higgs fields. We show that even if the field loses all its kinetic energy during reheating, it can evolve as dark matter due a gravitational coupling (of spinorial origin) with baryonic matter. Since the field acquires a constant value at the bottom of the potential, a non-null, although tiny, mass term acts as a dark energy component nowadays. Therefore, we conclude that MDO fermionic field is a good candidate to drive the whole evolution of the Universe, in such a way that the inflationary field, dark matter and dark energy are described by different manifestations of a single field. (AU)

• Processo FAPESP: 13/26258-4 - Matéria superdensa no universo
• Beneficiário: Manuel Máximo Bastos Malheiro de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático