Adjacent Spin Operator Dynamical Structure Factor of the S=1/2 Heisenberg Chain

Antoine Klauser, Jorn Mossel, Jean-Sébastien Caux

Considering the adjacent spin operators $S_j^z{S}_{j+1}^z$ and $S_j^{-}{S}_{j+1}^{-}$ in the S=1/2 Heisenberg chain, we give a determinant representation of their form factors. The dynamic…