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Teoreticheskaya i Matematicheskaya Fizika, 1981, Volume 47, Number 1, Pages 96–105 (Mi tmf2377)  
Ground-state wave function of a one-dimensional weakly nonideal lattice Fermi gas

V. Ya. Krivnov, A. A. Ovchinnikov
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Abstract: The Bogolyubov–Zubarev method of collective variab|es is used to find the ground-state wave function of a weakly nonideal one-dimensional lattice Fermi gas (in particular, the Hubbard model). The particle momentum distribution in the ground state is found in the first order in the coupling constant, and it is shown that the step in the Fermi distribution is smeared. A more realistic quasione-dimensional system is also considered and its excitation spectrum obtained.
Received: 14.01.1980
English version:
Theoretical and Mathematical Physics, 1981, Volume 47, Issue 1, Pages 339–345
DOI: https://doi.org/10.1007/BF01017025
Bibliographic databases:
Language: Russian
Citation: V. Ya. Krivnov, A. A. Ovchinnikov, “Ground-state wave function of a one-dimensional weakly nonideal lattice Fermi gas”, TMF, 47:1 (1981), 96–105; Theoret. and Math. Phys., 47:1 (1981), 339–345
Citation in format AMSBIB
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\by V.~Ya.~Krivnov, A.~A.~Ovchinnikov
\paper Ground-state wave function of a~one-dimensional weakly nonideal lattice Fermi gas
\jour TMF
\yr 1981
\vol 47
\issue 1
\pages 96--105
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\mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=616443}
\transl
\jour Theoret. and Math. Phys.
\yr 1981
\vol 47
\issue 1
\pages 339--345
\crossref{https://doi.org/10.1007/BF01017025}
\isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1981MS49200008}
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