Quantum entanglement in the anisotropic Heisenberg model with multicomponent DM and KSEA interactions
Quantum Physics
2021-05-13 v1 Statistical Mechanics
Abstract
Using group-theoretical approach we found a family of four nine-parameter quantum states for the two-spin-1/2 Heisenberg system in an external magnetic field and with multiple components of Dzyaloshinsky-Moriya (DM) and Kaplan-Shekhtman-Entin-Wohlman-Aharony (KSEA) interactions. Exact analytical formulas are derived for the entanglement of formation for the quantum states found. The influence of DM and KSEA interactions on the behavior of entanglement and on the shape of disentangled region is studied. A connection between the two-qubit quantum states and the reduced density matrices of many-particle systems is discussed.
Keywords
Cite
@article{arxiv.2103.01545,
title = {Quantum entanglement in the anisotropic Heisenberg model with multicomponent DM and KSEA interactions},
author = {A. V. Fedorova and M. A. Yurischev},
journal= {arXiv preprint arXiv:2103.01545},
year = {2021}
}
Comments
20 pages, 4 figures (5 eps files)