Abstract
We address the problem of defining the concept of entropy for anisotropic cosmological models. In particular, we analyze for the Bianchi I and V models the entropy which follows from postulating the validity of the laws of standard thermodynamics in cosmology. Moreover, we analyze the Cardy–Verlinde construction of entropy and show that it cannot be associated with the one following from relativistic thermodynamics.
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Hernández, F.J., Quevedo, H. Entropy and anisotropy. Gen Relativ Gravit 39, 1297–1309 (2007). https://doi.org/10.1007/s10714-007-0456-9
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DOI: https://doi.org/10.1007/s10714-007-0456-9