PATH INTEGRATION AND BOSE SPECTRUM IN THE ANTIFERROMAGNETIC STATE OF THE 2-DIMENSIONAL WEAKLY REPULSIVE HUBBARD-MODEL

Authors
KAPITONOV V MALYSHEV C POPOV VN SEVASTYANOV P
Citation
V. Kapitonov et al., PATH INTEGRATION AND BOSE SPECTRUM IN THE ANTIFERROMAGNETIC STATE OF THE 2-DIMENSIONAL WEAKLY REPULSIVE HUBBARD-MODEL, Physics letters. A, 236(1-2), 1997, pp. 89-96
Citations number
28
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
236
Issue
1-2
Year of publication
1997
Pages
89 - 96
Database
ISI
SICI code
0375-9601(1997)236:1-2<89:PIABSI>2.0.ZU;2-#
Abstract
The spectrum of collective modes in the antiferromagnetic state of the two-dimensional weakly repulsive Hubbard model is calculated by means of path integration with the use of ''fast'' and ''slow'' variables a nd the Hubbard-Stratonovich transformation both in the Ginzburg-Landau region and near zero temperature. (C) 1997 Published by Elsevier Scie nce B.V.