Spacetime Foam and the Vacuum Energy
Remo Garattini


Abstract
Different models of spacetime foam with and without a cosmological constant are taken under examination. The explicit construction of such models is realized by N wormholes in a semiclassical approximation. The zero point energy is explicitly evaluated in terms of Casimir energy by means of variational procedures. Indications on black hole entropy are given. The problem of Lorentz violation is examined in the context of spacetime foam.

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Elenco dei partecipanti al convegno di Bari.

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