Zobrazeno 1 - 10
of 407
pro vyhledávání: '"Payan S"'
We conduct a (pre-)inflationary dynamics study within the framework of a simple noncommutative extension of effective loop quantum cosmology -- put forward recently by the authors -- which preserves its key features (in particular, the quantum bounce
Externí odkaz:
http://arxiv.org/abs/2308.01363
Autor:
Socorro, J., Pérez-Payán, S., Hernández-Jiménez, Rafael, Espinoza-García, Abraham, Díaz-Barrón, Luis Rey
In this paper we present an analysis of a chiral anisotropic cosmological scenario from the perspective of quintom fields. In this setup quintessence and phantom fields interact in a non-standard (chiral) way within an anisotropic Bianchi type I back
Externí odkaz:
http://arxiv.org/abs/2210.01186
Autor:
Socorro, J., Pérez-Payán, S., Hernández-Jiménez, Rafael, Espinoza-García, Abraham, Díaz-Barrón, Luis Rey
Publikováno v:
Universe 2022, 8, 00548
In this paper, we present an analysis of a chiral cosmological scenario from the perspective of K-essence formalism. In this setup, several scalar fields interact within the kinetic and potential sectors. However, we only consider a flat Friedmann--R
Externí odkaz:
http://arxiv.org/abs/2204.12083
Publikováno v:
Phys. Rev. D 104, 023508 (2021)
We construct and study a simple noncommutative scheme (theta-deformation) for the effective Loop Quantum Cosmology of the flat Friedmann-Lema\^itre-Robertson-Walker model in the presence of a homogeneous scalar field $\phi$ with a potential $\mathcal
Externí odkaz:
http://arxiv.org/abs/2104.02859
In this work, we investigate the anisotropic Bianchi type I cosmological model in the chiral setup, in a twofold manner. Firstly, we consider a quintessence plus a k-essence like model, where two scalar fields but only one potential term is considere
Externí odkaz:
http://arxiv.org/abs/2101.05973
Autor:
Socorro, J., Pérez-Payán, S., Hernández, Rafael, Espinoza-García, Abraham, Díaz-Barrón, Luis Rey
In this work, first, we study a flat Friedmann-Robertson-Walker Universe with two scalar fields but only one potential term, which can be thought as a simple quintessence plus a K-essence model. Employing the Hamiltonian formalism we are able to obta
Externí odkaz:
http://arxiv.org/abs/2012.11108
Under the premise that the current observations of the cosmic microwave background radiation set a very stringent limit to the anisotropy of the universe, we consider an anistropic model in the presence of a barotropic perfect fluid and a homogeneous
Externí odkaz:
http://arxiv.org/abs/1911.09094
In this work we construct a noncommutative version of the Friedmann equations in the framework of effective loop quantum cosmology, extending and applying the ideas presented in a previous proposal by some of the authors. The model under consideratio
Externí odkaz:
http://arxiv.org/abs/1904.01212
Publikováno v:
In Journal of Quantitative Spectroscopy and Radiative Transfer June 2022 283
Publikováno v:
In International Journal of Thermal Sciences November 2021 169