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Teoreticheskaya i Matematicheskaya Fizika, 1991, Volume 86, Number 2, Pages 262–271
(Mi tmf5441)
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This article is cited in 2 scientific papers (total in 2 papers)
Transformation of electron spectrum in the Hubbard model
V. M. Zharkov
Abstract:
A new functional representation for strongly correlated systems is used to study the evolution of the electron spectrum in the Hubbard model with increasing $U$. It is established that the parametric instability of the ground state of a strongly correlated metal with 1/4 filled band
can be described by linear transformations of the dynamic fields. It is shown that the operator of the transformations has a nontrivial kernel. It is noted that the considered system can serve as a point of departure for interpreting structural transitions of $2k_F$ and $4k_F$ types
in the quasione-dimensional metal MEM(TCNQ)$_2$.
Received: 07.05.1990
Citation:
V. M. Zharkov, “Transformation of electron spectrum in the Hubbard model”, TMF, 86:2 (1991), 262–271; Theoret. and Math. Phys., 86:2 (1991), 181–188
Linking options:
https://www.mathnet.ru/eng/tmf5441 https://www.mathnet.ru/eng/tmf/v86/i2/p262
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Abstract page: | 300 | Full-text PDF : | 112 | References: | 42 | First page: | 1 |
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