Condensates beyond mean field theory: quantum backreaction as decoherence

Details Condensates beyond mean field theory: quantum backreaction as decoherence Condensates beyond mean field theory: quantum backreaction as decoherence

2000-07-17

arxiv.org/abs/physics/0007054v1

Phys. Rev. Lett. 86, 568 (2001)

Physics

Atomic Physics

4 pages, 4 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.86.568

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.

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