118 citations · 1.5k across the 69 of their papers we have counts for
5 papers · 1 filter
Space-like asymptotics of the thermal two-point functions of the XXZ spin-1/2 chain
F. Göhmann, K. K. Kozlowski
This work proposes a closed formula for the leading term of the long-distance and large-time asymptotics in a cone of the space-like regime for the transverse dynamical two-point f…
Bethe Ansatz
Frank Göhmann
The term Bethe Ansatz stands for a multitude of methods in the theory of integrable models in statistical mechanics and quantum field theory that were designed to study the spectra…
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…
Chiral basis for qubits and spin-helix decay
Vladislav Popkov, Xin Zhang, Frank Göhmann +1
We propose a qubit basis composed of transverse spin helices with kinks. Unlike the usual computational basis, this chiral basis is well suited for describing quantum states with n…