Spacetime foam as a quantum thermal bath

Details Spacetime foam as a quantum thermal bath Spacetime foam as a quantum thermal bath

1998-01-09

arxiv.org/abs/gr-qc/9801024v2

Phys.Rev.Lett. 80 (1998) 2508-2511

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

RevTeX 3.01, 4 pages

Scientific paper

10.1103/PhysRevLett.80.2508

An effective model for the spacetime foam is constructed in terms of nonlocal interactions in a classical background. In the weak-coupling approximation, the evolution of the low-energy density matrix is determined by a master equation that predicts loss of quantum coherence. Moreover, spacetime foam can be described by a quantum thermal field that, apart from inducing loss of coherence, gives rise to effects such as gravitational Lamb and Stark shifts as well as quantum damping in the evolution of the low-energy observables.

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