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

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Other Title
  • Spin Charge Separation at Finite Temper
  • Spin-Charge Separation at Finite Temperature in the Supersymmetric<i>t</i>-<i>J</i>Model with Long-Range Interactions
Published
1995
DOI
  • 10.1143/jpsj.64.4518
  • 10.48550/arxiv.cond-mat/9504122
Publisher
THE PHYSICAL SOCIETY OF JAPAN

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Description

Thermodynamics is derived rigorously for the 1D supersymmetric 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 render 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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