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

Journal Article · · Astrophysical Journal; (United States)
DOI:https://doi.org/10.1086/170206· OSTI ID:5261105
 [1]
  1. Texas, University, Austin (USA)
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. 35 refs.
OSTI ID:
5261105
Journal Information:
Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 375; ISSN ASJOA; ISSN 0004-637X
Country of Publication:
United States
Language:
English