This article is cited in 1 paper

Сollective excitations in the superconductive phase of the one-band Hubbard model

V. N. Popov, P. A. Sevastianov

St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences

Abstract: The method of functional integration is used to investigate the collective excitations in the superconducting state of the one-band two-dimensional Hubbard model with repulsion. The energy spectrum of the Bose modes is obtained. The existence of a branch of Bogolyubov sound is demonstrated. The phase structure and symmetry of the model are also considered.

Received: 12.07.1994

 English version: Theoretical and Mathematical Physics, 1995, 102:3, 331–335

Bibliographic databases:

• 
•