Bortz, MichaelSato, JunShiroishi, Masahiro2015-12-101751-8113http://hdl.handle.net/1885/52877We 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.200710.1088/1751-8113/40/16/0012015-12-09