Representation of the t-J model via spin-charge variables

Article

关键词: GENERALIZED COHERENT STATES;    SUPERCONDUCTIVITY;    ANTIFERROMAGNET;    SUPERGROUPS;    HOLE;   

DOI  :  10.1103/PhysRevB.56.2703

来源: SCIE

【 摘 要 】

We show that the t-J Hamiltonian is not in general reduced to Ht-J = H((S) over right arrow,f), where (S) over right arrow and f stand for independent ([(S) over right arrow,f] = 0) SU(2) (spin) generators and spinless fermionic (holon) fields, respectively. The proof is based upon an identification of the Hubbard operators with the generators of the su(2\1) superalgebra in the degenerate fundamental representation and ensuing SU(2\1) path-integral representation of the partition function Z(t-J).

【 授权许可】

Free