Entropy and the cosmological constant: a spacetime-foam approach

Abstract

A simple model of spacetime foam, made by N wormholes in a semiclassical approximation, is taken under examination. The Casimir-like energy of the quantum fluctuation of such a model and its probability of being realized are computed. Implications on the Bekenstein-Hawking entropy and the cosmological constant are considered.

LaTeX file uses espcrc2.sty, 4 pages. Talk given at the Third Meeting on Constrained Dynamics and Quantum Gravity, Villasimius (Sardinia), September 13-17, 1999. New Reference included

References in corpus (2)

• Entropy from the foam
• Virtual dipoles and large fluctuations in quantum gravity

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• Space Time Foam: a ground state candidate for Quantum Gravity
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