2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211876We calculate certain string correlation functions, originally introduced as order parameters in integer spin chains, for the spin-1/2 XXZ Heisenberg chain at zero temperature and in the thermodynamic limit. For small distances, we obtain exact results from Bethe Ansatz and exact diagonalization, whereas in the large-distance limit, field-theoretical arguments yield an asymptotic algebraic decay. We also make contact with two-point spin-correlation functions in the asymptotic limit.23 pages, 4 figures. An incomplete discussion on the limit to the spin-spin correlation function is corrected on page 12Statistical MechanicsHigh Energy Physics - TheoryExactly Solvable and Integrable Systemstext