Relative Energy Shift of a Two-Level Atom in a Cylindrical Spacetime  

作　　者：张佳林 

机构地区：[1]Institute of Physics and Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education,Hunan Normal University

出　　处：《Communications in Theoretical Physics》2012年第11期657-660,共4页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.11005038;the Program for Changjiang Scholars and Innovative Research Team in University under Grant No.IRT0964;the Hunan Provincial Natural Science Foundation of China under Grant No.11JJ7001

摘　　要：We investigate the evolution dynamics of a two-level atom system interacting with the massless scalar field in a Cylindrical spacetime. We find that both the energy shifts of ground state and excited state can be separated into two parts due to the vacuum fluctuations. One is the corresponding energy shift for a rest atom in four-dimensional Minkowski space without spatial compactification, the other is just the modification of the spatial compactified periodic length. It will reveal that the influence of the presence of one spatial compactified dimension can not be neglected in Lamb shift as the relative energy level shift of an ~tom.

关 键 词：Lamb shift vacuum fluctuation the master equation spatial compactification 

分 类 号：O413[理学—理论物理]