Inhomogeneous cosmologies with Q-matter and varying $Λ$

Details Inhomogeneous cosmologies with Q-matter and varying $Λ$ Inhomogeneous cosmologies with Q-matter and varying $Λ$

1999-06-30

arxiv.org/abs/gr-qc/9906125v2

Phys.Rev. D60 (1999) 103501

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, Revtex. To be published in Physical Review D

Scientific paper

10.1103/PhysRevD.60.103501

Starting from the inhomogeneous shear--free Nariai metric we show, by solving the Einstein--Klein--Gordon field equations, how a self--interacting scalar field plus a material fluid, a variable cosmological term and a heat flux can drive the universe to its currently observed state of homogeneous accelerated expansion. A quintessence scenario where power-law inflation takes place for a string-motivated potential in the late--time dominated field regime is proposed.

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