耗散量子隧道系统中的形变效应与热库维数的关系  

DEPENDENCE OF THE DEFORMATION IN DISSIPATIVE QUANTUM TUNNELING SYSTEMS ON THE DIMENSION OF THE BATH

作　　者：石云龙[1] 聂一行[1] 陈鸿[2] 吴翔[2] 

机构地区：[1]雁北师范学院物理系,大同037000 [2]同济大学物理系,上海200092

出　　处：《物理学报》1993年第10期1648-1653,共6页Acta Physica Sinica

基　　金：山西省自然科学基金;国家自然科学基金

摘　　要：本文利用微扰及变分法研究了耗散量子隧道系统中热库声子波函数的形变效应,发现形变与热库的维数有关。随着维数降低,一方面形变效应增大,另一方面形变效应对量子隧道系统的影响变得更为显著。The deformative effect of phonon states of the bath in a dissipative quantum tunneling system is studied by perturbation and a variational approach. We find that the deformative effect depends on the dimension of the bath. It increases as the dimension is reduced on one hand. On the other hand,it gives more stronger influence on the quantum tunneling system for a lower-dimensional bath.

关 键 词：量子隧道系统 耗散 热库 形变效应 

分 类 号：O414.2[理学—理论物理]