Hydrodynamical Behavior of Bose-Einstein Condensate near the Lambda Point
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概要
- 論文の詳細を見る
Amplitude of the Bose-Einstein condensate wave function (ABCW), superfluid velocity and entropy density are chosen as a set of gross variables, and nonlinear kinetic equations for superfluid ^4He near the λ point are written explicitly. Relaxation time of ABCW near the λ point is evaluated from contributions due to mode-mode couplings. A static correlation function of ABCW is assumed to be of the Ornstein-Zernike form. The relaxation time is shown to be independent of wave number in the long-wavelength limit and its value is estimated to be about ξ/c_2, where c_2 and ξ are the velocity of second sound and the critical correlation length, respectively.
- 理論物理学刊行会の論文
- 1976-11-25
著者
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Okwamoto Y
Hokkaido Univ. Sapporo
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Okwamoto Yukio
Department Of Engineering Science Faculty Of Engineering Hokkaido University
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OKWAMOTO Yukio
Department of Physics, Hokkaido University
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