Localizable entanglement of isotropic antiferromagnetic spin-1/2 chain

Authors : İzzet Paruğ DURU, Şahin AKTAŞ

Pages : 272-279

View : 13 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The bounds of entanglement on antiferromagnetic insert ignore into journalissuearticles values(AF); isotropic Heisenberg spin-1/2 chain including dipole- dipole interaction insert ignore into journalissuearticles values(D); were investigated. The Quantum Monte Carlo method based on loop algorithm was employed to calculate the two-spin and single-spin expectation values mediating the lower and upper bounds. It was revealed that D and Bz insert ignore into journalissuearticles values(the applied magnetic field); were pivotal parameters in controlling either entanglement creation/extinction or entanglement enhancement/weakening. Rival regions indicated a revival phenomenon depending on the temperature for various strengths of D which also showed a nonmonotonic behavior under certain Bz identifying critical points. Even if thermal agitations break the stability of strong D entanglement, it remains invariable at very low temperatures.
Keywords : Localizable entanglement, loop algorithm, Heisenberg model, dipole dipole interaction