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Pseudocoherent-state approximation for quantum field systems

✍ Scribed by V. Yu. Finkelstein; V. A. Namiot


Book ID
112932371
Publisher
Springer-Verlag
Year
1982
Weight
217 KB
Volume
69
Category
Article
ISSN
0369-3546

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Applying the time-dependent variational principle of Balian and Ve ne roni, we derive variational approximations for multi-time correlation functions in 8 4 field theory. We assume first that the initial state is given and characterized by a density operator equal to a Gaussian density matrix. Then,