Causal Entropy Bound for Non-Singular Cosmologies

Details Causal Entropy Bound for Non-Singular Cosmologies Causal Entropy Bound for Non-Singular Cosmologies

2001-08-14

arxiv.org/abs/hep-th/0108098v2

Phys.Rev. D65 (2002) 024004

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, no figures, acknowledgments added

Scientific paper

10.1103/PhysRevD.65.024004

The conditions for validity of the Causal Entropy Bound (CEB) are verified in the context of non-singular cosmologies with classical sources. It is shown that they are the same conditions that were previously found to guarantee validity of the CEB: the energy density of each dynamical component of the cosmic fluid needs to be sub-Planckian and not too negative, and its equation of state needs to be causal. In the examples we consider, the CEB is able to discriminate cosmologies which suffer from potential physical problems more reliably than the energy conditions appearing in singularity theorems.

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