Thermal entanglement of spins in the Heisenberg model at low temperatures

Details Thermal entanglement of spins in the Heisenberg model at low temperatures Thermal entanglement of spins in the Heisenberg model at low temperatures

2004-05-12

arxiv.org/abs/quant-ph/0405060v5

Physical Rev. A, 70, 052307 (2004)

Physics

Quantum Physics

17 pages, RevTex, no figures, revised with references added

Scientific paper

10.1103/PhysRevA.70.052307

We calculate the entanglement between two spins in the ferromagnetic Heisenberg chain at low temperatures, and show that when only the ground state and the one particle states are populated, the entanglement profile is a gaussian with a characteristic length depending on the temperature and the coupling between spins. The magnetic field only affects the amplitude of the profile and not its characteristic length.

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