67 citations · 85 across the 2 of their papers we have counts for
2 papers
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-mech2005★ 18 cited
Finite temperature density matrix and two-point correlations in the antiferromagnetic XXZ chain
Frank Göhmann, Nils P. Hasenclever, Alexander Seel
We derive finite temperature versions of integral formulae for the two-point correlation functions in the antiferromagnetic XXZ chain. The derivation is based on the summation of d…