1304.5512 (Andreas Klümper et al.)

Correlation functions of the integrable isotropic spin-1 chain:
algebraic expressions for arbitrary temperature    [PDF]

Andreas Klümper, Dominic Nawrath, Junji Suzuki

We derive algebraic formulas for the density matrices of finite segments of the integrable su(2) isotropic spin-1 chain in the thermodynamic limit. We give explicit results for the 2 and 3 site cases for arbitrary temperature T and zero field. In the zero temperature limit the correlation functions are given in elementary form in terms of Riemann's zeta function at even integer arguments.

View original: http://arxiv.org/abs/1304.5512