Brans–Dicke cosmology: thermodynamic viability
Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, WB, 741 246, India
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Accepted: 18 October 2019
Published online: 7 January 2020
Brans–Dicke cosmological models for a spatially isotropic and homogeneous universe are tested in terms of the validity of the generalized second law of thermodynamics (GSL). The investigation is carried out in the Einstein frame. It is found that the models are thermodynamically viable for negative values of the Brans–Dicke parameter and thus are quite consistent with the recent accelerated expansion of the universe.
© Società Italiana di Fisica (SIF) and Springer-Verlag GmbH Germany, part of Springer Nature, 2020