Condensates beyond mean field theory: quantum backreaction as decoherence

Preprint

17 July 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.physics/0007054

Abstract

We propose an experiment to measure the slow log(N) convergence to mean-field theory (MFT) around a dynamical instability. Using a density matrix formalism, we derive equations of motion which go beyond MFT and provide accurate predictions for the quantum break-time. The leading quantum corrections appear as decoherence of the reduced single-particle quantum state.

Keywords

QUANTUM BACKREACTION
EQUATIONS OF MOTION
MEAN FIELD THEORY
DECOHERENCE
THEORY
MFT

All Related Versions

Version 1, 2000-07-17, ArXiv
Published version: Physical Review Letters, 86 (4), 568.

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