Random Motion of a Charged Test Particle with a Classical Constant Velocity in Vacuum in a Cylindrical Spacetime  

作　　者：张佳林 余洪伟 

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

出　　处：《Chinese Physics Letters》2005年第10期2485-2488,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10375023, the Program for NCET （No 04-0784）, and the Key Project of the Ministry of Education of China （No 205110）.

摘　　要：We examine the random motion of a charged test particle with a nonzero classical velocity driven by quantum electromagnetic vacuum fluctuations in a cylindrical spacetime and calculate both the velocity and position dispersions of the test particle. It is found that the dispersions display different behaviour in different directions. These differences can be understood as a result of the topology of the configuration and initial physical conditions.We examine the random motion of a charged test particle with a nonzero classical velocity driven by quantum electromagnetic vacuum fluctuations in a cylindrical spacetime and calculate both the velocity and position dispersions of the test particle. It is found that the dispersions display different behaviour in different directions. These differences can be understood as a result of the topology of the configuration and initial physical conditions.

关 键 词：MASS GENERATION FLUCTUATIONS TIME POLARIZATION TOPOLOGY 

分 类 号：O211.6[理学—概率论与数理统计]