67 citations · 121 across the 4 of their papers we have counts for
4 papers
Doping a Mott insulator with orbital degrees of freedom
J. Sirker, J. Damerau, A. Klümper
We study the effects of hole doping on one-dimensional Mott insulators with orbital degrees of freedom. We describe the system in terms of a generalized t-J model. At a specific po…
Short-distance thermal correlations in the XXZ chain
Herman E. Boos, Jens Damerau, Frank Göhmann +3
Recent studies have revealed much of the mathematical structure of the static correlation functions of the XXZ chain. Here we use the results of those studies in order to work out…
Density matrices for finite segments of Heisenberg chains of arbitrary length
Jens Damerau, Frank Göhmann, Nils P. Hasenclever +1
We derive a multiple integral representing the ground state density matrix of a segment of length of the XXZ spin chain on lattice sites, which depends on only parametr…
Nonlinear integral equations for the thermodynamics of the sl(4)-symmetric Uimin-Sutherland model
Jens Damerau, Andreas Klümper
We derive a finite set of nonlinear integral equations (NLIE) for the thermodynamics of the one-dimensional sl(4)-symmetric Uimin-Sutherland model. Our NLIE can be evaluated numeri…