Quantum limitations on superluminal propagation

被引：40
|
作者：
Aharonov, Y [1 ]
Reznik, B
Stern, A
机构：
[1] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel
[2] Univ S Carolina, Dept Phys, Columbia, SC 29208 USA
[3] Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
[4] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel
来源：
PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 11期
关键词：
D O I：
10.1103/PhysRevLett.81.2190
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Unstable systems such as media with inverted atomic population have been shown to allow the propagation of analytic wave packets with group velocity faster than that of light, without violating causality. We illuminate the important role played by unstable modes in this propagation and show that the quantum fluctuations of these modes and their unitary time evolution impose severe restrictions on the observation of superluminal phenomena.
引用
收藏
页码：2190 / 2193
页数：4
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