ar X iv : g r - qc / 9 81 20 69 v 1 1 8 D ec 1 99 8 G 1 Cosmologies with Gravitational and Scalar Waves

نویسنده

  • Ruth Lazkoz
چکیده

I present here a new algorithm to generate families of inhomogeneous mass-less 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 cosmo-logical models which in their late time limit represent perturbations in the form of gravitational and scalar waves propagating on a non-static inhomo-geneous 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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تاریخ انتشار 2008