Cherenkov radiation of a sound in a Bose condensed gas

被引：25
|
作者：
Kovrizhin, DL [1 ]
Maksimov, LA [1 ]
机构：
[1] IV Kurchatov Atom Energy Inst, RRC, Moscow 123182, Russia
来源：
PHYSICS LETTERS A | 2001年 / 282卷 / 06期
关键词：
D O I：
10.1016/S0375-9601(01)00197-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In terms of linearized Gross-Pitaevskii equation we have studied the process of sound emission arises from a supersonic particle motion in a Bose condensed gas. By analogy with the method used for description of Vavilov-Cherenkov phenomenon, we have found a friction work created by the particle generated condensate polarization. For comparison we have found radiation intensity of excitations. Both methods gives the same result. (C) 2001 Published by Elsevier Science B.V.
引用
收藏
页码：421 / 427
页数：7
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