On representation of the t-J model via spin-charge variables

Details On representation of the t-J model via spin-charge variables On representation of the t-J model via spin-charge variables

1997-01-30

arxiv.org/abs/cond-mat/9701220v1

Physics

Condensed Matter

15 pages, latex, no figures

Scientific paper

10.1103/PhysRevB.56.2703

We show that the t-J Hamiltonian is not in general reduced to H(S,f), where S and f stand for independent ([S,f]=0) SU(2) (spin) generators and spinless fermionic (hole) field, 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.

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