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We present a method for generating exact diagonal cosmological solutions with two spacelike commuting Killing vectors ( G 2 cosmologies) 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.
Physical Review D – American Physical Society (APS)
Published: Nov 15, 2003
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