109 citations · 1.2k across the 57 of their papers we have counts for
58 papers
Thermal form-factor expansion of the dynamical two-point functions of local operators in integrable quantum chains
Frank Göhmann, Karol K. Kozlowski, Mikhail D. Minin
Evaluating a lattice path integral in terms of spectral data and matrix elements pertaining to a suitably defined quantum transfer matrix, we derive form-factor series expansions f…
Low-temperature spectrum of the quantum transfer matrix of the XXZ chain in the massless regime
Saskia Faulmann, Frank Göhmann, Karol K. Kozlowski
The free energy per lattice site of a quantum spin chain in the thermodynamic limit is determined by a single `dominant' Eigenvalue of an associated quantum transfer matrix in the…
Multi-point correlation functions in the boundary XXZ chain at finite temperature
Karol K. Kozlowski, Véronique Terras
We consider multi-point correlation functions in the open XXZ chain with longitudinal boundary fields and in a uniform external magnetic field. We show that, at finite temperature,…
Spin conductivity of the XXZ chain in the antiferromagnetic massive regime
Frank Göhmann, Karol K. Kozlowski, Jesko Sirker +1
We present a series representation for the dynamical two-point function of the local spin current for the XXZ chain in the antiferromagnetic massive regime at zero temperature. Fro…
Bootstrap approach to 1+1 dimensional integrable quantum field theories: the case of the Sinh-Gordon model
Karol K. Kozlowski
1+1 dimensional integrable quantum field theories correspond to a sparse subset of quantum field theories where the calculation of physically interesting observables can be brought…
Dressed energy of the XXZ chain in the complex plane
Saskia Faulmann, Frank Göhmann, Karol K. Kozlowski
We consider the dressed energy of the XXZ chain in the massless antiferromagnetic parameter regime at and at finite magnetic field. This function is define…