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Phys. Rev. A 59, 3878 - 3889 (1999)

Quantum kinetic theory for a condensed bosonic gas

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R. Walser, J. Williams, J. Cooper, and M. Holland
JILA, National Institute for Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440

Received 6 October 1998; revised 1 February 1999

We present a kinetic theory for Bose-Einstein condensation of a weakly interacting atomic gas in a trap. Starting from first principles, we establish a Markovian kinetic description for the evolution towards equilibrium. In particular, we obtain a set of self-consistent master equations for mean fields, normal densities, and anomalous fluctuations. These kinetic equations generalize the Gross-Pitaevskii mean-field equations, and merge them consistently with a quantum-Boltzmann-equation approach.


©1999 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.59.3878
DOI: 10.1103/PhysRevA.59.3878
PACS: 03.75.Fi, 05.30.Jp, 05.70.Ln, 42.55.Ah

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