Cold, Dilute, Trapped Bosons as an Open Quantum System

1996/11/06 by James R. Anglin, James Anglin · 5 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #cond-mat.stat-mech #quant-ph

paper · pdf · doi:10.1103/physrevlett.79.6

published as Phys.Rev.Lett. 79 (1997) 6-9 · 4 pages, RevTeX twocolumn style

arxiv created 1996/11/06 · openalex publication_date 1997/07/07 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a master equation governing the reduced density operator for a single trapped mode of a cold, dilute, weakly interacting Bose gas, and we obtain an operator fluctuation-dissipation relation in which the Ginzburg-Landau effective potential plays a physically transparent role. We also identify a decoherence effect that tends to preserve symmetry, even when the effective potential has a ``Mexican hat'' form.

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