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CHAU, LL; HUANG, DW; YU, Y; CHAU, LL , UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616, USA.
SYMMETRIES OF THE LARGE-U HUBBARD-MODEL AT HALF FILLING
Source PublicationPHYSICAL REVIEW LETTERS
KeywordHigh-tc Superconductivity Mean-field-theory Valence Bond State Antiferromagnet Mechanism Limit
AbstractSymmetries of the Hubbard model in the large-U limit are discussed. We show that the global SU(2) symmetry of the full even-lattice Hubbard model generated by Yang's eta-pairing operators becomes a local symmetry in the large-U limit and is applicable to even-odd mixed lattices. This extends the well-known SU(2) local symmetry of Anderson, for which we construct the generators. The associated local gauge theory of the extended symmetry can be similarly formulated and has interesting physical implications: new mean-field theories with parity-changed pairings. We point out the importance of searching for the parity-dependent Aharonov-Bohm-type of effects related to these local gauge symmetries.
1992
ISSN0031-9007
Volume68Issue:16Pages:2539-2542
Subject AreaPhysics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12170
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCHAU, LL , UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616, USA.
Recommended Citation
GB/T 7714
CHAU, LL,HUANG, DW,YU, Y,et al. SYMMETRIES OF THE LARGE-U HUBBARD-MODEL AT HALF FILLING[J]. PHYSICAL REVIEW LETTERS,1992,68(16):2539-2542.
APA CHAU, LL,HUANG, DW,YU, Y,&CHAU, LL , UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616, USA..(1992).SYMMETRIES OF THE LARGE-U HUBBARD-MODEL AT HALF FILLING.PHYSICAL REVIEW LETTERS,68(16),2539-2542.
MLA CHAU, LL,et al."SYMMETRIES OF THE LARGE-U HUBBARD-MODEL AT HALF FILLING".PHYSICAL REVIEW LETTERS 68.16(1992):2539-2542.
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