Quantum Decoherence in a D-Foam Background

Details Quantum Decoherence in a D-Foam Background Quantum Decoherence in a D-Foam Background

1997-04-24

arxiv.org/abs/hep-th/9704169v1

Mod.Phys.Lett.A12:1759-1773,1997

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, Latex, two eps figures included

Scientific paper

10.1142/S0217732397001795

Within the general framework of Liouville string theory, we construct a model for quantum D-brane fluctuations in the space-time background through which light closed-string states propagate. The model is based on monopole and vortex defects on the world sheet, which have been discussed previously in a treatment of 1+1-dimensional black-hole fluctuations in the space-time background, and makes use of a T-duality transformation to relate formulations with Neumann and Dirichlet boundary conditions. In accordance with previous general arguments, we derive an open quantum-mechanical description of this D-brane foam which embodies momentum and energy conservation and small mean energy fluctuations. Quantum decoherence effects appear at a rate consistent with previous estimates.

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