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Prog. Theor. Phys. Vol. 56 No. 5 (1976) pp. 1360-1373

[ Full Text PDF : FREE ACCESS (831K) ]

Theory of Relaxation Time of the Bose-Einstein Condensate

Nobuharu Morii, Kazumasa Miyake* and Tunemaru Usui*

Department of Applied Physics, Faculty of Engineering, Nagoya University, Nagoya 464
*Department of Physics, Nagoya University, Nagoya 464

(Received March 10, 1976)

Abstract:

Relaxation of the Bose-Einstein condensate to its equilibrium density is discussed in a linear approximation of deviations. In particular, a microscopic theoretical expression for the relaxation time is given, which is applicable when the time is much longer than the correlation time of the random forces acting on the condensate. The relaxation time is inversely proportional to the condensate density. The phase of the condensate also relaxes to its equilibrium value of broken symmetry in accordance with the Josephson equation.


URL : http://ptp.ipap.jp/link?PTP/56/1360/
DOI : 10.1143/PTP.56.1360

[ Full Text PDF : FREE ACCESS (831K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 56 No. 6 (1976) pp. 1689-1704 :
    Dynamics of Bose-Einstein Condensate and Two-Fluid Hydrodynamics
    Kazumasa Miyake and Kazuo Yamada
  2. Progress of Theoretical Physics Vol. 58 No. 1 (1977) pp. 147-160 :
    Structure of the Green Function for the Bose Liquid near the Lambda Point
    Nobuharu Morii

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