Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 14, Tome 245 (1997), pp. 216-230
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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. Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 14, Tome 245 (1997), pp. 216-230. http://geodesic.mathdoc.fr/item/ZNSL_1997_245_a11/
@article{ZNSL_1997_245_a11,
author = {V. S. Kapitonov and K. L. Malyshev and V. N. Popov and P. A. Sevastianov},
title = {The effective action and the collective modes spectrum in the antiferromagnetic phase of the three{\textendash}band repulsive {Hubbard} model},
journal = {Zapiski Nauchnykh Seminarov POMI},
pages = {216--230},
year = {1997},
volume = {245},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_245_a11/}
}
TY - JOUR
AU - V. S. Kapitonov
AU - K. L. Malyshev
AU - V. N. Popov
AU - P. A. Sevastianov
TI - The effective action and the collective modes spectrum in the antiferromagnetic phase of the three–band repulsive Hubbard model
JO - Zapiski Nauchnykh Seminarov POMI
PY - 1997
SP - 216
EP - 230
VL - 245
UR - http://geodesic.mathdoc.fr/item/ZNSL_1997_245_a11/
LA - ru
ID - ZNSL_1997_245_a11
ER -
%0 Journal Article
%A V. S. Kapitonov
%A K. L. Malyshev
%A V. N. Popov
%A P. A. Sevastianov
%T The effective action and the collective modes spectrum in the antiferromagnetic phase of the three–band repulsive Hubbard model
%J Zapiski Nauchnykh Seminarov POMI
%D 1997
%P 216-230
%V 245
%U http://geodesic.mathdoc.fr/item/ZNSL_1997_245_a11/
%G ru
%F ZNSL_1997_245_a11
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.
