...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Generalized concurrence and quantum phase transition in spin-1 Heisenberg model
【24h】

Generalized concurrence and quantum phase transition in spin-1 Heisenberg model

机译：旋转1 Heisenberg模型中的广义兼容性和量子相转变

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper we investigate the ability of the generalized concurrence as a quantum entanglement measure to describe the quantum and thermal phase transitions in the spin-1 Heisenberg model with bilinear and biquadratic interactions and single-ion anisotropy terms, under a magnetic field. Calculations are performed for two and three spin chains based on the exact diagonalization method. We show that in the near vicinity of the zero temperature, the generalized concurrence changes abruptly from a finite non-zero value to zero by changing the parameters of the model. This is signature of a quantum phase transition that is carefully justified by studying the thermodynamic functions such as magnetization, particle number, particle susceptibility and magnetic susceptibility. The critical points are found and various ordered phases are discussed.
机译：在本文中，我们研究了广义并发作为量子纠缠措施的能力，以描述磁场下具有双线性和双离子相互作用和单离子各向异性术语的旋转-1 Heisenberg模型中的量子和热相转变。 基于精确的对角化方法对两个和三个旋转链进行计算。 我们表明，在零温度附近，通过改变模型的参数，广义并发通过改变模型的参数来突然地从有限的非零值变为零。 这是通过研究诸如磁化，粒子数，粒子敏感性等热力学功能的量子相转变的签名。 发现临界点，并讨论了各种有序的阶段。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号