Inhomogeneous cosmologies with Q-matter and varying $\Lambda$

Abstract

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.

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

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Cited by in corpus (7)

• Nonsingular vacuum cosmologies with a variable cosmological term
• The gravitating perfect fluid-scalar field equations: quintessence and tachyonic
• Inhomogeneous cosmologies, the Copernican principle and the cosmic microwave background: More on the EGS theorem
• Assisted inflation in Friedmann-Robertson-Walker and Bianchi spacetimes
• Relativistic theories of interacting fields and fluids
• Inhomogeneous models of interacting dark matter and dark energy
• A Scaling Relation in Inhomogeneous Cosmology with k-essence scalar fields