191 citations · 479 across the 11 of their papers we have counts for
11 papers
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…
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…
High-temperature analysis of the transverse dynamical two-point correlation function of the XX quantum-spin chain
Frank Göhmann, Karol K. Kozlowski, Junji Suzuki
We analyse the transverse dynamical two-point correlation function of the XX chain by means of a thermal form factor series. The series is rewritten in terms of the resolvent and t…
On the theory of microwave absorption by the spin-1/2 Heisenberg-Ising magnet
Michael Brockmann, Frank Göhmann, Michael Karbach +2
We analyze the problem of microwave absorption by the Heisenberg-Ising magnet in terms of shifted moments of the imaginary part of the dynamical susceptibility. When both, the Zeem…
On the universal R-matrix for the Izergin-Korepin model
H. Boos, F. Göhmann, A. Klümper +2
We continue our exercises with the universal -matrix based on the Khoroshkin and Tolstoy formula. Here we present our results for the case of the twisted affine Kac--Moody Lie a…
Factorization of the finite temperature correlation functions of the XXZ chain in a magnetic field
Herman E. Boos, Frank Göhmann, Andreas Klümper +1
We present a conjecture for the density matrix of a finite segment of the XXZ chain coupled to a heat bath and to a constant longitudinal magnetic field. It states that the inhomog…