Thermal form factor approach to the ground-state correlation functions of the XXZ chain in the antiferromagnetic massive regime

@article{Dugave2016ThermalFF,
  title={Thermal form factor approach to the ground-state correlation functions of the XXZ chain in the antiferromagnetic massive regime},
  author={Maxime Dugave and Frank G{\"o}hmann and Karol Kajetan Kozlowski and Junji Suzuki},
  journal={Journal of Physics A: Mathematical and Theoretical},
  year={2016},
  volume={49}
}
We use the form factors of the quantum transfer matrix in the zero-temperature limit in order to study the two-point ground-state correlation functions of the XXZ chain in the antiferromagnetic massive regime. We obtain novel form factor series representations of the correlation functions which differ from those derived either from the q-vertex-operator approach or from the algebraic Bethe Ansatz approach to the usual transfer matrix. We advocate that our novel representations are numerically… 

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