Author:
Giardino Serena,Faraoni Valerio,Giusti Andrea
Abstract
Abstract
A new thermodynamics of scalar-tensor gravity is applied to spatially
homogeneous and isotropic cosmologies in this
class of theories and tested
on analytical solutions. A forever-expanding universe approaches the
Einstein “state of equilibrium” with zero effective temperature at late
times and departs from it near spacetime singularities. “Cooling” by
expansion and “heating” by singularities compete near the Big Rip, where
it is found that the effective temperature diverges in the case of
a conformally coupled scalar field.
Subject
Astronomy and Astrophysics
Cited by
13 articles.
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