Emptiness formation probability of the XXZ spin-1/2 Heisenberg chain at Delta=1/2
arXiv:hep-th/0201134 · doi:10.1088/0305-4470/35/27/102
Abstract
Using a multiple integral representation for the correlation functions, we compute the emptiness formation probability of the XXZ spin-1/2 Heisenberg chain at anisotropy Delta=1/2. We prove it is expressed in term of the number of alternating sign matrices.
5 pages