A Spacetime Foam Approach to the Schwarzschild-de Sitter Entropy

Abstract

The entropy for a black hole in a de Sitter space is approached within the framework of spacetime foam. A simple model, made by $N$ wormholes in a semiclassical approximation, is taken under examination to compute the entropy for such a case. An extension to the extreme case when the black hole and cosmological horizons are equal is discussed.

Published in Entropy 2000, 2, 26-38, www.mdpi.org/entropy/

References in corpus (3)

• Entropy from the foam
• On Quantum Nature of Black-Hole Spacetime: A Possible New Source of Intense Radiation
• Virtual dipoles and large fluctuations in quantum gravity

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• Gravity's Rainbow induces Topology Change
• Quantum Mechanical Spectra of Charged Black Holes
• Spectrum of rotating black holes and its implications for Hawking radiation
• The Quantum Field Theory Boundaries Applicability and Black Holes Thermodynamics
• Schwarzschild-de Sitter black hole from entropic viewpoint
• Area, ladder symmetry, degeneracy and fluctuations of a horizon
• Quantum amplification effect in a horizon fluctuations