135 citations · 309 across the 9 of their papers we have counts for
9 papers
Cosmological model with fermion and tachyon fields interacting via Yukawa-type potential
Marlos O. Ribas, Fernando P. Devecchi, Gilberto M. Kremer
A model for the universe with tachyonic and fermionic fields interacting through a Yukawa-type potential is investigated. It is shown that the tachyonic field answers for the initi…
Isotropization in Bianchi type-I cosmological model with fermions and bosons interacting via Yukawa potential
M. O. Ribas, L. L. Samojeden, F. P. Devecchi +1
In this work we investigate a model for the early Universe in a Bianchi type-I metric, where the sources of the gravitational field are a fermionic and a bosonic field, interacting…
Exit from accelerated regimes by symmetry breaking in a universe filled with fermionic and bosonic sources
Marlos O. Ribas, Pedro Zambianchi, Fernando P. Devecchi +1
In this work we investigate a universe filled with a fermionic field and a complex scalar field, exchanging energy through a Yukawa potential; the model encodes a symmetry breaking…
Fermions in a Walecka-type cosmology
Marlos O. Ribas, Pedro Zambianchi, Fernando P. Devecchi +1
A simplified Walecka-type model is investigated in a cosmological scenario. The model includes fermionic, scalar and vector fields as sources. It is shown that their interactions,…
Fermionic cosmologies with Yukawa type interactions
Marlos O. Ribas, Fernando P. Devecchi, Gilberto M. Kremer
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-interactio…
Fermion fields in Einstein-Cartan theory and the accelerated-decelerated transition in a primordial Universe
Marlos O. Ribas, Gilberto M. Kremer
In this work the accelerated-decelerated transition in a primordial Universe is investigated by using the dynamics of fermion fields within the context of Einstein-Cartan theory, w…