Thermodynamics and Lemaitre-Tolman-Bondi void models
arXiv:1406.0563 · doi:10.1103/PhysRevD.89.123007
Abstract
It has been argued in the literature that in order to make a matter dominated Friedmann-Lemaitre-Robertson-Walker universe compatible with the generalized second law of thermodynamics, one must invoke dark energy, or modified gravity. In the present article we investigate if in a similar spirit, inhomogeneous cosmological models can be motivated on thermodynamic grounds. We examine a particular minimal void Lemaitre-Tolman-Bondi inhomogeneous model which agrees well with observations. While on the one hand we find that the entropy associated with the apparent horizon is not well-behaved thermodynamically, on the other hand the canonical Weyl curvature entropy shows satisfactory thermodynamic behavior. We suggest that evolution of canonical Weyl curvature entropy might be a useful way to evaluate the thermodynamic viability of inhomogeneous cosmologies.
This version: one paragraph added at the end, acknowledgements and references added, matches published version
References in corpus (18)
- Hawking Radiation of Apparent Horizon in a FRW Universe
- Confronting Lemaitre-Tolman-Bondi models with Observational Cosmology
- Lemaitre-Tolman-Bondi model and accelerating expansion
- Interacting holographic dark energy
- Looking the void in the eyes - the kSZ effect in LTB models
- Testing the Void against Cosmological data: fitting CMB, BAO, SN and H0
- Can we avoid dark energy?
- Precision cosmology defeats void models for acceleration
- Mapping Luminosity-Redshift Relationship to LTB Cosmology
- Szekeres Swiss-Cheese model and supernova observations
- Thermodynamics of Apparent Horizon in Brane World Scenarios
- Local Void vs Dark Energy: Confrontation with WMAP and Type Ia Supernovae
- Information Entropy in Cosmology
- Solving the Inverse Problem with Inhomogeneous Universes
- Reconciling the local void with the CMB
- Cosmic spherical void via coarse-graining and averaging non-spherical structures
- Observational constraints on the LLTB model
- Thermodynamics of Lemaitre-Tolman-Bondi Model