The two-spinon transverse structure factor of the gapped Heisenberg antiferromagnetic chain

J. -S. Caux, J. Mossel, I. Pérez Castillo

We consider the transverse dynamical structure factor of the anisotropic Heisenberg spin-1/2 chain (XXZ model) in the gapped antiferromagnetic regime ($\Delta >1$). Specializing to the…