Asymptotic behavior of cosmological models in scalar-tensor theories of gravity

Andrew Billyard, Alan Coley, and Jesus Ibáñez
Phys. Rev. D 59, 023507 – Published 8 December 1998
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Abstract

We study the qualitative properties of cosmological models in scalar-tensor theories of gravity by exploiting the formal equivalence of these theories with general relativity minimally coupled to a scalar field under a conformal transformation and field redefinition. In particular, we investigate the asymptotic behavior of spatially homogeneous cosmological models in a class of scalar-tensor theories which are conformally equivalent to general relativistic Bianchi cosmologies with a scalar field and an exponential potential whose qualitative features have been studied previously. Particular attention is focused on those scalar-tensor theory cosmological models, which are shown to be self-similar, that correspond to general relativistic models that play an important role in describing the asymptotic behavior of more general models (e.g., those cosmological models that act as early-time and late-time attractors).

  • Received 3 March 1998

DOI:https://doi.org/10.1103/PhysRevD.59.023507

©1998 American Physical Society

Authors & Affiliations

Andrew Billyard and Alan Coley

  • Department of Mathematics, Statistics and Computing Science and Department of Physics, Dalhousie University, Halifax, Nova Scotia, Canada B3H 3J5

Jesus Ibáñez

  • Departmento Fisica Teorica, Universidad del Pais Vasco, Bilbao, Spain

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Vol. 59, Iss. 2 — 15 January 1999

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