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Cosmological constraints on scalar field dark matter
(2021-01-01)
This paper aims to put constraints on the parameters of the Scalar Field Dark Matter (SFDM) model, when dark matter is described by a free real scalar field filling the whole universe, plus a cosmological constant term. ...
Thermodynamic behavior of the generalized scalar Yukawa model in a magnetic background
(Elsevier, 2014)
We study the thermodynamic behavior of the generalized scalar Yukawa model, composed of a complex scalar field interacting with scalar and vector fields. Thermal effects are treated in the framework of generalized ...
A model with two inert scalar doublets
(Elsevier B.V., 2016-01-01)
We consider an extension of the standard model (SM) with three SU(2) scalar doublets and discrete S-3 circle times Z(2) symmetries. The irreducible representation of S3 has a singlet and a doublet, and here we show that ...
Decaying vacuum cosmology and its scalar field description
(IOP Publishing LtdBristol, 2014)
We discuss the cosmological consequences of an interacting model in the dark
sector in which the component evolves as a truncated power series of the
Hubble parameter. We also discuss some of the thermodynamic features ...
Reliability of the optimized perturbation theory in the 0-dimensional O(N) scalar field model
(Elsevier B.V., 2016-12-15)
We address the reliability of the Optimized Perturbation Theory (OPT) in the context of the 0-dimensional O(N) scalar field model. The effective potential, the self-energy and the 1PI four-point Green's function for the ...