Density matrix of a finite sub-chain of the Heisenberg anti-ferromagnet

Details Density matrix of a finite sub-chain of the Heisenberg anti-ferromagnet Density matrix of a finite sub-chain of the Heisenberg anti-ferromagnet

2005-06-21

arxiv.org/abs/hep-th/0506171v2

Lett.Math.Phys. 75 (2006) 201-208

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, some formulas are refined

Scientific paper

10.1007/s11005-006-0054-x

We consider a finite sub-chain on an interval of the infinite XXX model in
the ground state. The density matrix for such a subsystem was described in our
previous works for the model with inhomogeneous spectral parameters. In the
present paper, we give a compact formula for the physically interesting case of
the homogeneous model.

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