Path Integral Representations for the Spin-Pinned Quantum XXZ Chain

#### O. Bolina, P. Contucci, B. Nachtergaele

2005, v.11, Issue 2, 211-221

ABSTRACT

Two discrete path integral formulations for the ground state of a spin- pinned quantum anisotropic XXZ Heisenberg chain are introduced. Their properties are discussed and two recursion relations are proved.

Keywords: Heisenberg model,path integral representation,groundstate,pinned spin