Anisotropic cosmology in K-essence theory

10th Workshop of the Gravitation and Mathematical Physics Division, Mexican Physical Society

物理学;数学

Socorro, J.^1,2 ; Pimentel, Luis O^2 ; Espinoza-García, Abraham^1

Departamento de Física, DCel de la Universidad de Guanajuato, Campus León, Guanajuato

C.P. 37150, Mexico^1

Departamento de Física, Universidad Autonoma Metropolitana, Apartado Postal 55-534, México D.F.

09340, Mexico^2

关键词: Anisotropic models;    Barotropic;    Classical solutions;    Closed form;    Cosmological modeling;    Isotropization;    Perfect fluid;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/545/1/012015/pdf
DOI  :  10.1088/1742-6596/545/1/012015

来源: IOP

【 摘 要 】

We use one of the simplest forms of the K-essence theory and we apply it to the classical anisotropic Bianchi type I cosmological model, with a barotropic perfect fluid (p γρ) modeling the usual matter content and include the particular form of potential V(φ) constant 2Λ. The classical solutions for any γ ≠ 1 and Λ 0 are found in closed form, using a time transformation. We also present the solution when Λ ≠ 0 including particular values in the barotropic parameter. We present the possible isotropization of the cosmological model Bianchi I using the ratio between the anisotropic parameters and the volume of the universe and show that this tend to a constant or to zero for different cases.