Cold, Dilute, Trapped Bosons as an Open Quantum System
- 7 July 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 79 (1) , 6-9
- https://doi.org/10.1103/physrevlett.79.6
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.Keywords
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