Zengo Tsuboi, Minoru Takahashi
Published 2004-12-27, updated 2004-12-28Version 2
We propose a system of nonlinear integral equations (NLIE) which describes the thermodynamics of the U_{q}(\hat{sl(r+1)}) Perk-Schultz model. These NLIE correspond to a trigonometric analogue of our previous result (cond-mat/0212280), and contain only r unknown functions. In particular, they reduce to Takahashi's NLIE for the XXZ spin chain (cond-mat/0010486) if r=1. We also calculate the high temperature expansion of the free energy. In particular for r=1 case, we have succeeded to derive the coefficients of order O((\frac{J}{T})^{99}).
Comments: 19 pages, 4 figures, only the Mathematica file for the high temperature expansion is replaced, to appear in J.Phys.Soc.Jpn.Vol.74 No.3 (2005)
Journal: J.Phys.Soc.Jap. 74 (2005) 898-904
Nonlinear Integral Equations and high temperature expansion for the $U_{q}(\hat{sl}(r+1|s+1))$ Perk-Schultz Model
Nonlinear integral equations for thermodynamics of the sl(r+1) Uimin-Sutherland model
Nonlinear integral equations for the thermodynamics of the sl(4)-symmetric Uimin-Sutherland model
