11 citations · 11 across the 4 of their papers we have counts for
4 papers
Magnetic-field induced spiral order in the electric polarization
Pei Wang, You-Quan Li
We present a phenomenological model for magnetoelectricity in multiferroic materials. The distinctive feature of the model is a two-component complex order parameter that encodes t…
Entanglement in spin-1/2 dimerized Heisenberg systems
Zhe Sun, XiaoGuang Wang, AnZi Hu +1
We study entanglement in dimerized Heisenberg systems. In particular, we give exact results of ground-state pairwise entanglement for the four-qubit model by identifying a Z_2 symm…
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…
Exact results of a hard-core interacting system with a single impurity
You-Quan Li, Zhong-Shui Ma
The quantum-mechanical problem of a many-particle system with a single impurity in one-dimension, interacting by a delta-function, is solved. The wave-function for a bosonic system…