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Generating $G_2$--cosmologies with perfect fluid in dilaton gravity

Stoytcho S. Yazadjiev
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Abstract

We present a method for generating exact diagonal $G_2$-cosmological solutions in dilaton gravity coupled to a radiation perfect fluid and with a cosmological potential of a special type. The method is based on the symmetry group of the system of $G_2$-field equations. Several new classes of explicit exact inhomogeneous perfect fluid scalar-tensor cosmologies are presented.

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Stoytcho S. Yazadjiev. 2003-06-03. Generating $G_2$--cosmologies with perfect fluid in dilaton gravity. https://doi.org/10.1103/physrevd.68.104021

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