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cond-mat.stat-mech2007★ 67 cited
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…
cond-mat.stat-mech2006★ 14 cited
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…