Perturbations of the Robertson-Walker space - Multicomponent sources and generalized gravity

Details Perturbations of the Robertson-Walker space - Multicomponent sources and generalized gravity Perturbations of the Robertson-Walker space - Multicomponent sources and generalized gravity

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...375..443h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 375, July 10, 1991, p. 443-462.

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120

Gauge Invariance, Metric Space, Perturbation Theory, Relativity, Computational Astrophysics, Cosmochemistry, Field Theory (Physics), Scalars

Scientific paper

Cosmological perturbation equations in the Robertson-Walker background applicable to some classes of generalized gravity theories, including multicomponent fluids and fields, are presented. The equations are expressed in a form which does not depend on the frame, and the adaptation of the equations into a particular gauge or into some gauge-invariant formulation becomes trivial. A generalization of formalism applicable to a variety of generalized gravity theories, including most of the gravity theories with scalar field and scalar curvature combination, is developed.

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