21 citations · 21 across the 1 of their papers we have counts for
8 papers
Fermion field as inflaton, dark energy and dark matter
Guilherme Grams, Rudinei C. de Souza, Gilberto M. Kremer
The search for constituents that can explain the periods of accelerating expansion of the Universe is a fundamental topic in cosmology. In this context, we investigate how fermioni…
Analysis of the non-minimally coupled scalar field in the Palatini formalism by the Noether symmetry approach
Rudinei C. de Souza, Raíla André, Gilberto M. Kremer
We analyse a scalar field non-minimally coupled to gravity in the context of a Universe described by the flat Friedmann-Robertson-Walker (F-R-W) metric. The adopted model comprises…
Cosmological models with spinor and scalar fields by Noether symmetry approach
Gilberto M. Kremer, Rudinei C. de Souza
General cosmological models with spinor and scalar fields playing the role of gravitational sources are analyzed. The Noether symmetry approach is taken as a criterion to constrain…
Conformal coupling associated with the Noether symmetry and its connection with the CDM dynamics
Rudinei C. de Souza, Gilberto M. Kremer
The aim of the present work is to investigate a non-minimally coupled scalar field model through the Noether symmetry approach, with the radiation, matter and cosmological constant…
Primordial scalar perturbations in tachyonic power-law inflation
Rudinei C. de Souza, Gilberto M. Kremer
In this work we determine the power spectrum of the gravitational potential of the primordial fluctuations for an inflationary model whose \emph{inflaton} is a non-canonical scalar…
Cosmic expansion from boson and fermion fields
Rudinei C. de Souza, Gilberto M. Kremer
This paper consists in analyzing an action that describes boson and fermion fields minimally coupled to the gravity and a common matter field. The self-interaction potentials of th…