65 citations · 186 across the 5 of their papers we have counts for
5 papers
Computation of static Heisenberg-chain correlators: Control over length and temperature dependence
Jun Sato, Britta Aufgebauer, Hermann Boos +4
We communicate results on correlation functions for the spin-1/2 Heisenberg-chain in two particularly important cases: (a) for the infinite chain at arbitrary finite temperature $T…
Thermodynamics and short-range correlations of the XXZ chain close to its triple point
Christian Trippe, Frank Göhmann, Andreas Klümper
The XXZ quantum spin chain has a triple point in its ground state - phase diagram. This first order critical point is located at the joint end point of the two second order…
Exact calculation of the magnetocaloric effect in the spin-1/2 XXZ chain
Christian Trippe, Andreas Honecker, Andreas Klümper +1
We calculate the entropy and cooling rate of the antiferromagnetic spin-1/2 XXZ chain under an adiabatic demagnetization process using the quantum transfer-matrix technique and non…
Short-distance thermal correlations in the massive XXZ chain
Christian Trippe, Frank Göhmann, Andreas Klümper
We explore short-distance static correlation functions in the infinite XXZ chain using previously derived formulae which represent the correlation functions in factorized form. We…
Quantum phase transitions and thermodynamics of quantum antiferromagnets with competing interactions
Christian Trippe, Andreas Klümper
We study the isotropic Heisenberg chain with nearest and next-nearest neighbour interactions. The ground state phase diagram is constructed in dependence on the additonal interacti…