Abstracts

Branislav Cvetkovic

Entropy in Poincare gauge theory: Hamiltonian approach

The canonical generator of local symmetries in Poincare gauge theory is constructed as an integral over a spatial section of spacetime. Its regularity (differentiability) on the phase space is ensured by adding a suitable surface term, an integral over the boundary infinity, which represents the asymptotic canonical charge. For black hole solutions, there are two boundaries, one at infinity and one at horizon. It is shown that the canonical charge at horizon defines entropy, and the condition of regularity yields the first law of black hole thermodynamics.