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Inhomogeneous cosmologies with Q-matter and varying $Λ$

Luis P. Chimento·Alejandro S. Jakubi·Diego Pavon
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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.

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Luis P. Chimento, Alejandro S. Jakubi, Diego Pavon. 1999-07-01. Inhomogeneous cosmologies with Q-matter and varying $Λ$. https://doi.org/10.1103/physrevd.60.103501

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