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Zapiski Nauchnykh Seminarov POMI, 1997, Volume 245, Pages 216–230
(Mi znsl542)
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This article is cited in 1 scientific paper (total in 1 paper)
The effective action and the collective modes spectrum in the antiferromagnetic phase of the three–band repulsive Hubbard model
V. S. Kapitonovab, K. L. Malysheva, V. N. Popova, P. A. Sevastianovab a St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences
b State Technological Institute of St. Petersburg
Abstract:
The paper is concerned with the application of path integration (successive integration over “fast” and “slow” variables and the Hubbard–Stratonovich transformation) to the antiferromagnetic state in the three-band two
dimensional repulsive Hubbard model. It is shown that the model under consideration is equivalent in the lowest approximation to the half–filled single–band Hubbard model. The effective action for the collective
Bose-fields, the critical temperature of the phase transition and the exitations spectra are obtained.
Received: 03.03.1996
Citation:
V. S. Kapitonov, K. L. Malyshev, V. N. Popov, P. A. Sevastianov, “The effective action and the collective modes spectrum in the antiferromagnetic phase of the three–band repulsive Hubbard model”, Questions of quantum field theory and statistical physics. Part 14, Zap. Nauchn. Sem. POMI, 245, POMI, St. Petersburg, 1997, 216–230; J. Math. Sci. (New York), 99:2 (2000), 2147–2155
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https://www.mathnet.ru/eng/znsl542 https://www.mathnet.ru/eng/znsl/v245/p216
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Abstract page: | 170 | Full-text PDF : | 100 |
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