G1 Cosmologies with Gravitational and Scalar Waves

Details G1 Cosmologies with Gravitational and Scalar Waves G1 Cosmologies with Gravitational and Scalar Waves

1998-12-18

arxiv.org/abs/gr-qc/9812069v1

Phys.Rev. D60 (1999) 104008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

24 pages, 2 figures

Scientific paper

10.1103/PhysRevD.60.104008

I present here a new algorithm to generate families of inhomogeneous massless scalar field cosmologies. New spacetimes, having a single isometry, are generated by breaking the homogeneity of massless scalar field $G_2$ models along one direction. As an illustration of the technique I construct cosmological models which in their late time limit represent perturbations in the form of gravitational and scalar waves propagating on a non-static inhomogeneous background. Several features of the obtained metrics are discussed, such as their early and late time limits, structure of singularities and physical interpretation.

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