Mean field and exact diagonalization studies on an SO(5) symmetric ladder

Authors
Hong, SP Salk, SHS
Citation
Sp. Hong et Shs. Salk, Mean field and exact diagonalization studies on an SO(5) symmetric ladder, PHYSICA B, 261, 1999, pp. 1053-1055
Citations number
2
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
261
Year of publication
1999
Pages
1053 - 1055
Database
ISI
SICI code
0921-4526(199901)261:<1053:MFAEDS>2.0.ZU;2-#
Abstract
Mean field and exact diagonalization studies on the quasiparticle excitatio n of an SO(5) symmetric two-leg ladder system are reported. It is shown tha t the two results are in good agreement with each other in the weak couplin g limit. It is found that shadow peaks appear above the Fermi surface as a result of quasiparticle excitation which represents a mixture of electron a nd hole states. (C) 1999 Elsevier Science B.V. All rights reserved.