Casimir Repulsion between Metallic Objects in Vacuum

被引：135
|
作者：
Levin, Michael [1 ]
McCauley, Alexander P. [2 ]
Rodriguez, Alejandro W. [2 ]
Reid, M. T. Homer [2 ]
Johnson, Steven G. [3 ]
机构：
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[2] MIT, Dept Phys, Cambridge, MA 02139 USA
[3] MIT, Dept Math, Cambridge, MA 02139 USA
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 09期
关键词：
CONDUCTING SPHERICAL-SHELL; ZERO-POINT ENERGY; FORCES;
D O I：
10.1103/PhysRevLett.105.090403
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We give an example of a geometry in which two metallic objects in vacuum experience a repulsive Casimir force. The geometry consists of an elongated metal particle centered above a metal plate with a hole. We prove that this geometry has a repulsive regime using a symmetry argument and confirm it with numerical calculations for both perfect and realistic metals. The system does not support stable levitation, as the particle is unstable to displacements away from the symmetry axis.
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页数：4
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