Cold, dilute, trapped bosons as an open quantum system

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.

4 pages, RevTeX twocolumn style

References in corpus (3)

• Quantum Kinetic Theory I: A Quantum Kinetic Master Equation for Condensation of a weakly interacting Bose gas without a trapping potential
• Interference of Bose condensates
• Decoherence of Quantum Fields: Pointer States and Predictability

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