作者: M. Tokuyama , H. Mori
DOI: 10.1143/PTP.55.411
关键词:
摘要: It is shown that the Heisenberg equation of motion can be transformed exactly into reduced form dA(t)/dt= [i.Q- S:!(s)ds] ·A(t) +g(t), where A(t) an arbitrary column vector dynamical variables, .Q IS a frequency matrix determining collective oscillations, and g (t) fluctuating force.