Spontaneous Emission of an Atom in a Spacetime with Two Parallel Reflecting Boundaries  

作　　者：黄铁铁 朱致英 朱云峰 余洪伟 

机构地区：[1]Department of Physics and Institute of Physics, Hunan Normal University, Changsha 410081 [2]Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha 410081 [3]Department of Physics, Xiangn'an University, Chenzhou 423000

出　　处：《Chinese Physics Letters》2009年第4期35-38,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grants Nos 10575035 and 10775050, and the SRFDP under Grant No 20070542002.

摘　　要：We consider an inertial two-level atom in interaction with a real massless scalar quantum field in a spacetime between two parallel reflecting plane boundaries, and calculate the contributions of vacuum fluctuations and radiation reaction to the rate of change of the atomic energy. Our results show that there exists a regime of the separation L between the two boundaries such that the excited atom＇s spontaneous emission is impossible. There also exist certain values of the atom＇s position such that the corrections due to the presence of boundaries balance each other, so that the atom＇s spontaneous emission rate is the same as if there were no boundaries at all.We consider an inertial two-level atom in interaction with a real massless scalar quantum field in a spacetime between two parallel reflecting plane boundaries, and calculate the contributions of vacuum fluctuations and radiation reaction to the rate of change of the atomic energy. Our results show that there exists a regime of the separation L between the two boundaries such that the excited atom＇s spontaneous emission is impossible. There also exist certain values of the atom＇s position such that the corrections due to the presence of boundaries balance each other, so that the atom＇s spontaneous emission rate is the same as if there were no boundaries at all.

关 键 词：gamma-ray bursts GAMMA-RAYS RELATIVITY 

分 类 号：O431.2[机械工程—光学工程] TN248.6[理学—光学]