534 citations · 3.1k across the 80 of their papers we have counts for
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Temperature dependent spatial oscillations in the correlations of the XXZ spin chain
Klaus Fabricius, Andreas Klümper, Barry M. McCoy
We study the correlation for the XXZ chain in the massless attractive (ferromagnetic) region at positive temperatures by means of a numerical study of the quantum tr…
Anti-Symmetrically Fused Model and Non-Linear Integral Equations in the Three-State Uimin-Sutherland Model
Akira Fujii, Andreas Kluemper
We derive the non-linear integral equations determining the free energy of the three-state pure bosonic Uimin-Sutherland model. In order to find a complete set of auxiliary functio…
Exact Thermodynamics of Disordered Impurities in Quantum Spin Chains
A. Klümper, A. A. Zvyagin
Exact results for the thermodynamic properties of ensembles of magnetic impurities with randomly distributed host-impurity couplings in the quantum antiferromagnetic Heisenberg mod…
Finite Temperature DMRG Investigation of the Spin-Peierls Transition in CuGeO
A. Klümper, R. Raupach, F. Schönfeld
We present a numerical study of thermodynamical properties of dimerized frustrated Heisenberg chains down to extremely low temperatures with applications to CuGeO. A variant of…