109 citations · 1.2k across the 57 of their papers we have counts for
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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…
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…
Exact real-time longitudinal correlation functions of the massive XXZ chain
Constantin Babenko, Frank Göhmann, Karol K. Kozlowski +2
We apply the recently developed thermal form factor expansion method to evaluate the real-time longitudinal spin-spin correlation functions of the spin- XXZ chain in t…
A thermal form factor series for the longitudinal two-point function of the Heisenberg-Ising chain in the antiferromagnetic massive regime
Constantin Babenko, Frank Göhmann, Karol K. Kozlowski +1
We consider the longitudinal dynamical two-point function of the XXZ quantum spin chain in the antiferromagnetic massive regime. It has a series representation based on the form fa…
Late-time large-distance asymptotics of the transverse correlation functions of the XX chain in the space-like regime
Frank Göhmann, Karol K. Kozlowski, Junji Suzuki
We derive an explicit expression for the leading term in the late-time, large-distance asymptotic expansion of a transverse dynamical two-point function of the XX chain in the spac…
Equilibrium dynamics of the XX chain
Frank Göhmann, Karol K. Kozlowski, Jesko Sirker +1
The equilibrium dynamics of the spin-1/2 XX chain is re-examined within a recently developed formalism based on the quantum transfer matrix and a thermal form factor expansion. The…
Thermal form-factor approach to dynamical correlation functions of integrable lattice models
Frank Göhmann, Michael Karbach, Andreas Klümper +2
We propose a method for calculating dynamical correlation functions at finite temperature in integrable lattice models of Yang-Baxter type. The method is based on an expansion of t…
Thermal form factor approach to the ground-state correlation functions of the XXZ chain in the antiferromagnetic massive regime
Maxime Dugave, Frank Göhmann, Karol K. Kozlowski +1
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 anti…
Low-temperature spectrum of correlation lengths of the XXZ chain in the antiferromagnetic massive regime
Maxime Dugave, Frank Göhmann, Karol K. Kozlowski +1
We consider the spectrum of correlation lengths of the spin- XXZ chain in the antiferromagnetic massive regime. These are given as ratios of eigenvalues of the quantum…
On form-factor expansions for the XXZ chain in the massive regime
M. Dugave, F. Göhmann, K. K. Kozlowski +1
We study the large-volume- limit of form factors of the longitudinal spin operators for the XXZ spin- chain in the massive regime. We find that the individual form factors…
Low-temperature large-distance asymptotics of the transversal two-point functions of the XXZ chain
Maxime Dugave, Frank Göhmann, Karol K. Kozlowski
We derive the low-temperature large-distance asymptotics of the transversal two-point functions of the XXZ chain by summing up the asymptotically dominant terms of their expansion…
Thermal form factors of the XXZ chain and the large-distance asymptotics of its temperature dependent correlation functions
Maxime Dugave, Frank Göhmann, Karol K. Kozlowski
We derive expressions for the form factors of the quantum transfer matrix of the spin-1/2 XXZ chain which are suitable for taking the infinite Trotter number limit. These form fact…