Abstract:
The effective-action method is used to study a two-dimensional theory with four-fermion current-current interaction. A phase transition with respect to the coupling constant from the symmetric to nonsymmetric phase is found. In the different phases, there exist different numbers of Goldstone modes of the Bose excitations as in the anisotropic superfluid phases of ${}^3\operatorname{He}$.
Citation:
N. E. Bogdanova, V. N. Popov, “Two-dimensional field theory with several condensed phases”, TMF, 46:3 (1981), 325–334; Theoret. and Math. Phys., 46:3 (1981), 212–218
\Bibitem{BogPop81}
\by N.~E.~Bogdanova, V.~N.~Popov
\paper Two-dimensional field theory with several condensed phases
\jour TMF
\yr 1981
\vol 46
\issue 3
\pages 325--334
\mathnet{http://mi.mathnet.ru/tmf2340}
\transl
\jour Theoret. and Math. Phys.
\yr 1981
\vol 46
\issue 3
\pages 212--218
\crossref{https://doi.org/10.1007/BF01032730}
\isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1981MN84000007}
Linking options:
https://www.mathnet.ru/eng/tmf2340
https://www.mathnet.ru/eng/tmf/v46/i3/p325
This publication is cited in the following 3 articles:
Jun Yan, “Functional integrals and phase stability properties in the $O(N)$ vector field condensation model”, Theoret. and Math. Phys., 210:1 (2022), 111–120
JUN YAN, “FUNCTIONAL INTEGRALS AND PHASE STRUCTURES IN SINE-GORDON–THIRRING MODEL”, Mod. Phys. Lett. B, 26:27 (2012), 1250178
S. I. Kruglov, “Dynamic mass formation and collective variables in a nonlinear spinor model”, Soviet Physics Journal, 25:11 (1982), 1037