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Attractive electromagnetic Casimir stress on a spherical dielectric shell

被引：8
|
作者：
Graham, N. [1 ]
Quandt, M. [2 ]
Weigel, H. [3 ]
机构：
[1] Middlebury Coll, Dept Phys, Middlebury, VT 05753 USA
[2] Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany
[3] Univ Stellenbosch, Dept Phys, ZA-7602 Matieland, South Africa
来源：
PHYSICS LETTERS B | 2013年 / 726卷 / 4-5期
基金：
美国国家科学基金会; 新加坡国家研究基金会;
关键词：
QUANTUM-FIELD-THEORY; ENERGIES; SCATTERING; MODEL;
D O I：
10.1016/j.physletb.2013.09.025
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Based on calculations involving an idealized boundary condition, it has long been assumed that the stress on a spherical conducting shell is repulsive. We use the more realistic case of a Drude dielectric to show that the stress is attractive, matching the generic behavior of Casimir forces in electromagnetism. We trace the discrepancy between these two cases to interactions between the electromagnetic quantum fluctuations and the dielectric material. (C) 2013 Elsevier B.V. All rights reserved.
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页码：846 / 849
页数：4
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