Sonoluminescence as quantum vacuum radiation

被引:113
作者
Eberlein, C [1 ]
机构
[1] UNIV ILLINOIS, DEPT PHYS, URBANA, IL 61801 USA
关键词
D O I
10.1103/PhysRevLett.76.3842
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Sonoluminescence is explained in terms of quantum vacuum radiation by moving interfaces between media of different polarizability. It can be considered as a dynamic Casimir effect, in the sense that it is a consequence of the imbalance of the zero-point fluctuations of the electromagnetic field during the noninertial motion of a boundary. The transition amplitude from the vacuum into a two-photon state is calculated in a Hamiltonian formalism and turns out to be governed by the transition matrix element of the radiation pressure. Expressions for the spectral density and the total radiated energy are given.
引用
收藏
页码:3842 / 3845
页数:4
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