热克尔态下介观LC电路的量子涨落  

Quantum effects of the mesoscopic LC electric circuit in thermal Kerr state

作　　者：阮文[1] 雷敏生[1] 嵇英华[1] 谢安东[2] 

机构地区：[1]江西师范大学物理系,南昌330027 [2]井冈山师范学院物理系,吉安343009

出　　处：《物理学报》2005年第5期2291-2295,共5页Acta Physica Sinica

基　　金：江西省自然科学基金 (批准号 :0 2 12 0 18)资助的课题 .~~

摘　　要：基于介观电容可看作介观隧道结的物理事实 ,利用旋波近似方法 ,对介观LC电路进行量子化处理 ,量子化后介观LC电路系统等效为一个克尔系统 .再利用热场动力学理论方法研究了介观LC电路在有限温度时热克尔态下电荷和磁通的量子涨落 ,并对结果进行了讨论 .Based on the fact that a mesoscopic capacitor can be regarded as a mesoscopic tunnel junction, we quantized the mesoscopic LC circuit by using the rotating-wave approximation. The study shows: Considering the coupled energy of the mesoscopic capacitor, the system of the mesoscopic LC circuit will be equivalent to a Kerr system. We also used the thermal field dynamic theory to investigate the thermal Kerr state at a definite temperature and calculated the quantum fluctuation of both charge and magnetic flux, and discussed the results.

关 键 词：介观电容 LC电路 量子涨落 热克尔态 热场动力学 

分 类 号：O488[理学—固体物理]