Nonequilibrium Vacuum in Thermo Field Dynamics
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概要
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In the framework of thermo field dynamics, the so-called thermal state conditions of the vacuum are extended from the equilibrium case to general cases in the Heisenberg picture. The formalism is shown to describe nonequilibrium phenomena of a quantum field system. It is shown that the causal formulation of a perturbation theory is developed. As an example of application of the perturbation theory, an effective Hamiltonian describing a reservoir effect is obtained.
- 理論物理学刊行会の論文
- 1988-02-25
著者
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MATSUMOTO Hideki
Institute for Materials Research, Tohoku University
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Matsumoto Hideki
Dipartimento Di Fisica Teorica E Sue Metodologie Per Le Scienze Applicate Universita Di Salermo
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MATSUMOTO Hideki
Applied Physics, Seikei University
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MATSUMOTO Hideki
Department of Applied Physics, Seikei University:(Present address)Institute of Physics,Univ. of Tsukuba
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