Integral representations for correlation functions of the XXZ chain at finite temperature

May, 2004
33 pages
Published in:
  • J.Phys.A 37 (2004) 7625-7652
e-Print:

Citations per year

2002200820142020202402468
Abstract:
We derive a novel multiple integral representation for a generating function of the \s^z-\s^z correlation functions of the spin-\2 XXZ chain at finite temperature and finite, longitudinal magnetic field. Our work combines algebraic Bethe ansatz techniques for the calculation of matrix elements with the quantum transfer matrix approach to thermodynamics.
Note:
  • 33 pages, 2 figures, v2: 2 typos corrected, 1 figure added Subj-class: High Energy Physics - Theory: Statistical Mechanics: Mathematical Physics