Superluminal propagation of solitary kinklike waves in amplifying media

被引：7
|
作者：
Janowicz, M [1 ]
Mostowski, J [1 ]
机构：
[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
来源：
PHYSICAL REVIEW E | 2006年 / 73卷 / 04期
关键词：
D O I：
10.1103/PhysRevE.73.046613
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
It is shown that solitary-wave, kinklike structures can propagate superluminally in two- and four-level amplifying media with strongly damped oscillations of coherences. This is done by solving analytically the Maxwell-Bloch equations in the kinetic limit. It is also shown that the true wave fronts-unlike the pseudo wave fronts of the kinks-must propagate with velocity c, so that no violation of special relativity is possible. The conditions of experimental verification are discussed.
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页数：9
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