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arXiv · 1903.02263

Entropy in Poincar\'e gauge theory: Hamiltonian approach

Milutin Blagojević·Branislav Cvetković
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Abstract

The canonical generator $G$ of local symmetries in Poincar\'e gauge theory is constructed as an integral over a spatial section $\Sigma$ of spacetime. Its regularity (differentiability) on the phase space is ensured by adding a suitable surface term, an integral over the boundary of $\Sigma$ at infinity, which represents the asymptotic canonical charge. For black hole solutions, $\Sigma$ has two boundaries, one at infinity and the other at horizon. It is shown that the canonical charge at horizon defines entropy, whereas the regularity of $G$ implies the first law of black hole thermodynamics.

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Milutin Blagojević, Branislav Cvetković. 2019-03-06. Entropy in Poincar\'e gauge theory: Hamiltonian approach. https://doi.org/10.1103/physrevd.99.104058

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