Influence of magnetic current on the ground state entanglement in an isotropic transverse XY chain

来源 :自然科学进展(英文版) | 被引量 : 0次 | 上传用户:ychhome
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
We study the ground state entanglement in a three-qubit XY chain under the influence of a magnetization current. It is found that the ground state changes from a W state to a disentangled state as the magnetic field varies. When the Lagrange multiplier λ>√3, namely under a strong magnetic current, the ground state holds onto a W state for a large range of the magnetic field strength. A phase transition to the magnetization-current phase occurs under a certain condition.
其他文献
用蒙特卡洛模拟Jetset7.4产生质心能量为91.2GeV的正负电子对撞事件.在引入喷注的圆锥角后,对不同味的夸克喷注和由不同味夸克发射的胶子产生的喷注的角分布特性进行了仔细研
In this paper, it was proved that the commutator Hβ,b generated by an n-dimensional fractional Hardy operator and a locally integrable function b is bounded fr
北京大学30MeV超导加速器包含3个RF加速单元:自主研发的1.5cell DC-SC(直流-超导)注入器,经过升级的3.5cell DC-SC注入器,以及1.3GHz 2×9cell Telsa型超导加速腔.为充分利用
Recently bacterial cells have become attractive biological templates for the fabrication of metal nano- structures or nanomaterials due to their inherent small
由二级散射矩阵元出发计算了核物质内强子的二级自能修正,并且归纳了一种研究原子核多体问题的有效方法.另外,还讨论了各种密度相关的相对论多体方法之间的关系.
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
A necessary and sufficient condition is obtained for the incompleteness of a complex exponential system E(A, M) in Cα, where Cα is the weighted Banach space c
Active contour modeling (ACM) has been shown to be a powerful method in object boundary extraction. In this paper,a new ACM based on vector bundle constraint fo
A method is presented for determining the optical thickness (τc) and effective particle radius (γe) of stratiform cloud layers from transmitted solar radiatio
介绍了用于HI-13串列加速器质谱(AMS)测量的182Hf实验室参考标准的研制.通过180Hf的连续热中子俘获产生182Hf,用热电离质谱对初始参考标准的同位素比进行了精确测量.取一定量