Spin-Charge Separation at Finite Temperature in the Supersymmetric t-J Model with Long-Range Interactions

Details Spin-Charge Separation at Finite Temperature in the Supersymmetric t-J Model with Long-Range Interactions Spin-Charge Separation at Finite Temperature in the Supersymmetric t-J Model with Long-Range Interactions

1995-04-30

arxiv.org/abs/cond-mat/9504122v1

Physics

Condensed Matter

10 pages, REVTEX

Scientific paper

10.1143/JPSJ.64.4518

Thermodynamics is derived rigorously for the 1D supersymmetric {\it t-J} model and its SU($K,1$) generalization with inverse-square exchange. The system at low temperature is described in terms of spinons, antispinons, holons and antiholons obeying fractional statistics. They are all free and make the spin susceptibility independent of electron density, and the charge susceptibility independent of magnetization. Thermal spin excitations responsible for the entropy of the SU($K,1$) model are ascribed to free para-fermions of order $K-1$.

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