Viscous cosmologies in scalar-tensor theories for Kasner type metrics

Mauricio Cataldo, Sergio del Campo, and Patricio Salgado
Phys. Rev. D 63, 063503 – Published 13 February 2001
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Abstract

In a viscous Bianchi type-I metric of the Kasner form, it is well known that it is not possible to describe an anisotropic physical model of the universe, which satisfies the second law of thermodynamics and the dominant energy condition in Einstein’s theory of gravity. We examine this problem in scalar-tensor theories of gravity. In this theory we show that it is possible to describe the growth of entropy, keeping the thermodynamics and the dominant energy condition.

  • Received 21 August 2000

DOI:https://doi.org/10.1103/PhysRevD.63.063503

©2001 American Physical Society

Authors & Affiliations

Mauricio Cataldo*

  • Departamento de Física, Facultad de Ciencias, Universidad del Bío-Bío, Avda. Collao 1202, Casilla 5-C, Concepción, Chile

Sergio del Campo

  • Instituto de Física, Facultad de Ciencias Básicas y Matemáticas, Universidad Católica de Valparaíso, Avenida Brasil 2950, Valparaíso, Chile

Patricio Salgado

  • Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Concepción, Casilla 4009, Concepción, Chile

  • *Email address: mcataldo@alihuen.ciencias.ubiobio.cl
  • Email address: sdelcamp@ucv.cl
  • Email address: pasalgad@udec.cl

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Vol. 63, Iss. 6 — 15 March 2001

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