Thermodynamics of regular cosmological black holes with de Sitter interior

I. Dymnikova1 and M. Korpusik2

Abstract

We address the question of thermodynamics of a regular spherically symmetric cosmological black hole. The spacetime is asymptotically de Sitter as r 0 and as r . A source term in the Einstein equations connects smoothly two de Sitter vacua with different values of the cosmological constant and corresponds to an anisotropic vacuum fluid defined by the symmetry of its stress-energy tensor, invariance under radial boosts. In the range of the mass parameter Mcrit1 M Mcrit2 it describes a regular cosmological black hole.

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