DENSITY-MATRIX FORMALISM, DOUBLE-SPACE AND THERMO FIELD-DYNAMICS IN NONEQUILIBRIUM DISSIPATIVE SYSTEMS

被引：38
|
作者：
SUZUKI, M
机构：
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1991年 / 5卷 / 11期
关键词：
D O I：
10.1142/S0217979291000705
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
General relationship among the density matrix formalism, the double-space formulation and thermo field dynamics is discussed in non-equilibrium dissipative quantum systems. The concept of weakly equivalent operators in the double space formulation is introduced to review many well-known results and it is shown to be useful in mapping between the density matrix formalism and the double space formulation. A new non-equilibrium thermo field dynamics is formulated to discuss dissipative quantum systems. A simple example of damped harmonic oscillators is discussed in the present representation.
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页码：1821 / 1842
页数：22
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