Showing quant-phShow all
2 papers · 1 filter
quant-ph2004
Effects of staggered magnetic field on entanglement in the anisotropic XY model
Zhe Sun, XiaoGuang Wang, You-Quan Li
We investigate effects of staggered magnetic field on thermal entanglement in the anisotropic XY model. The analytic results of entanglement for the two-site cases are obtained. Fo…
quant-ph2004
Entanglement of degenerate ground state for spin 1 and 1/2 pair
You-Quan Li, Guo-Qiang Zhu, Xue-An Zhao
We study the entanglement feature of the ground state of a system composed of spin 1 and 1/2 parts. The concurrence vector is shown to be consistent with the measurement of von Neu…