Accelerated Multi-Level Atoms in an Electromagnetic Vacuum and Fulling-Davies-Unruh Effect  

作　　者：朱致英 余洪伟 

机构地区：[1]Department of Physics and Institute of Physics, Flunan Normal University, Changsha 410081

出　　处：《Chinese Physics Letters》2008年第5期1575-1578,共4页中国物理快报（英文版）

基　　金：Supported in part by the National Natural Science Foundation of China under Grants Nos 10575035 and 10775050, the Programme for NCET under Grant No 04-0784, the SRFDP under Grant No 20070542002, and the Programme for the Key Discipline in Hunan Province.

摘　　要：We consider, from the point of view of a coaccelerated frame, a uniformly accelerated multi-level atom in interaction with vacuum quantum electromagnetic fields in the multi-polar coupling scheme, and calculate the rate of change of the atom＇s energy assuming a thermal bath at a finite temperature T in the Rindler wedge. Comparison with the spontaneous excitation rate of the atom calculated in the instantaneous inertial frame of the atom shows that both the inertial and coaccelerated observer would agree with each other only when the temperature of the thermal bath equals the FDU value TFDU = α/2π.We consider, from the point of view of a coaccelerated frame, a uniformly accelerated multi-level atom in interaction with vacuum quantum electromagnetic fields in the multi-polar coupling scheme, and calculate the rate of change of the atom＇s energy assuming a thermal bath at a finite temperature T in the Rindler wedge. Comparison with the spontaneous excitation rate of the atom calculated in the instantaneous inertial frame of the atom shows that both the inertial and coaccelerated observer would agree with each other only when the temperature of the thermal bath equals the FDU value TFDU = α/2π.

关 键 词：SPONTANEOUS EXCITATION RADIATION REACTION FLUCTUATIONS QUANTIZATION SPACETIME BOUNDARY FIELD 

分 类 号：O413[理学—理论物理]