Exact results for the sigma(z) two-point function of the XXZ chain Delta=1/2 - Archive ouverte HAL Access content directly
Journal Articles Journal of Statistical Mechanics: Theory and Experiment Year : 2005

Exact results for the sigma(z) two-point function of the XXZ chain Delta=1/2

(1) , (2) , (3) , (2, 4)
1
2
3
4

Abstract

We propose a new multiple-integral representation for the correlation function [sigma(1)(z)sigma(m+1)(z)] of the XXZ spin-1/2 Heisenberg chain in the disordered regime. We show that for Delta = 1/2 the integrals can be separated and computed exactly. As an example we give the explicit results up to the lattice distance m = 8. It turns out that the answer is given as integer numbers divided by 2((m+1)2).

Dates and versions

ensl-00266557 , version 1 (24-03-2008)

Identifiers

Cite

N. Kitanine, Jean Michel Maillet, N. A. Slavnov, Véronique Terras. Exact results for the sigma(z) two-point function of the XXZ chain Delta=1/2. Journal of Statistical Mechanics: Theory and Experiment, 2005, L09002, pp.L09002. ⟨10.1088/1742-5468/2005/09/L09002⟩. ⟨ensl-00266557⟩
73 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More