Entanglement of spin1/2 Heisenberg Antiferromagnetic quantum spin chains
Abstract
The quantum entanglement measure is determined, for the first time, for a collection of spin1/2 arranged in a infinite chain with finite temperature and applied to a singlecrystal \beta\mathrm{T_eVO_4}. The physical quantity proposed here to measure the entanglement is the distance between states by adopting the HilbertSchmidt norm. We relate the distance between states with the magnetic susceptibility. The decoherence temperature, above which the entanglement is suppressed, is determined for a system. A correlation among their decoherence temperatures and their respective exchange coupling constants is established, moreover, it is conjectured that the exchange coupling protects the system from decoherence as temperature increases.
 Publication:

arXiv eprints
 Pub Date:
 May 2016
 DOI:
 10.48550/arXiv.1605.04373
 arXiv:
 arXiv:1605.04373
 Bibcode:
 2016arXiv160504373D
 Keywords:

 Condensed Matter  Strongly Correlated Electrons;
 Quantum Physics