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Teoreticheskaya i Matematicheskaya Fizika, 1985, Volume 62, Number 2, Pages 304–311
(Mi tmf4575)
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This article is cited in 4 scientific papers (total in 4 papers)
Feynman's variational principle for a polaron in a magnetic field
S. N. Gorshkov, A. V. Zabrodin, C. Rodriguez, V. K. Fedyanin
Abstract:
The validity of the generalization of Feynman's variational inequality in polaron theory
to the case of an arbitrary nonvanishing constant magnetic field is investigated. It is
shown that when an anisotropic trial quadratic action is used this generalization is not
valid. For the linear polaron model in the case of isotropic trial quadratic action the
validity of the Feyuman variational inequality is proved for all temperatures, coupling
constants, and magnetic fields.
Received: 18.04.1984
Citation:
S. N. Gorshkov, A. V. Zabrodin, C. Rodriguez, V. K. Fedyanin, “Feynman's variational principle for a polaron in a magnetic field”, TMF, 62:2 (1985), 304–311; Theoret. and Math. Phys., 62:2 (1985), 205–210
Linking options:
https://www.mathnet.ru/eng/tmf4575 https://www.mathnet.ru/eng/tmf/v62/i2/p304
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