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

页码：2190 / 2193

页数：4

共 8 条

[1] SUPERLUMINAL BEHAVIOR, CAUSALITY, AND INSTABILITY
AHARONOV, Y
KOMAR, A
SUSSKIND, L
[J]. PHYSICAL REVIEW, 1969, 182 (05): : 1400 - &
[2] HOW THE RESULT OF A MEASUREMENT OF A COMPONENT OF THE SPIN OF A SPIN-1/2 PARTICLE CAN TURN OUT TO BE 100
AHARONOV, Y
ALBERT, DZ
VAIDMAN, L
[J]. PHYSICAL REVIEW LETTERS, 1988, 60 (14) : 1351 - 1354
[3] BERY MV, 1994, J PHYS A, V27, pL391
[4] Tachyonlike excitations in inverted two-level media
Chiao, RY
Kozhekin, AE
Kurizki, G
[J]. PHYSICAL REVIEW LETTERS, 1996, 77 (07) : 1254 - 1257
[5] CHIAO RY, 1998, PROGR OPTICS, V37
[6] CHIAO RY, 1993, PHYS REV A, V48, P34
[7] Superluminal group velocities and information transfer
Diener, G
[J]. PHYSICS LETTERS A, 1996, 223 (05) : 327 - 331
[8] Trans-Planckian tail in a theory with a cutoff
Reznik, B
[J]. PHYSICAL REVIEW D, 1997, 55 (04): : 2152 - 2158

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