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Zapiski Nauchnykh Seminarov POMI, 1995, Volume 224, Pages 300–309
(Mi znsl4450)
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Effective action and collective bose-excitations in the $t$-$J$-model
V. N. Popov, P. A. Sevastianov St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences
Abstract:
The two-dimensional ($2D$) $t$-$T$-model is investigated using the functional integration method. The effective action is obtained, and the spectrum of collective Bose-excitations in the superconductive phase of the system is calculated both in the phase-transition vicinity (Ginsburg–Landau region $|T-T_c|\ll T_c$) and in the low-temperature region $T\ll T_c$. Bibliography: 26 titles.
Received: 01.10.1994
Citation:
V. N. Popov, P. A. Sevastianov, “Effective action and collective bose-excitations in the $t$-$J$-model”, Questions of quantum field theory and statistical physics. Part 13, Zap. Nauchn. Sem. POMI, 224, POMI, St. Petersburg, 1995, 300–309; J. Math. Sci. (New York), 88:2 (1998), 306–312
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https://www.mathnet.ru/eng/znsl4450 https://www.mathnet.ru/eng/znsl/v224/p300
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Abstract page: | 108 | Full-text PDF : | 42 |
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