Derivation of Transport Equations Using the Time-Dependent Projection Operator Method
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概要
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We develop a formalism to carry out coarse-grainings in quantum field theoretical systems by using a time-dependent projection operator in the Heisenberg picture. A systematic perturbative expansion with respect to the interaction part of the Hamiltonian is given, and a Langevin-type equation without a time-convolution integral term is obtained. This method is applied to a quantum field theoretical model, and coupled transport equations are derived.
- 理論物理学刊行会の論文
- 2002-03-25
著者
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Koide Tomoi
Yukawa Institute For Theoretical Physics Kyoto University
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KOIDE Tomoi
Department of Physics, Tohoku University
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KOIDE Tomoi
Yukawa Institute for Theoretical Physics, Kyoto University
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