MACROSCOPIC MULTI-SPECIES ENTANGLEMENT NEAR QUANTUM PHASE TRANSITIONS

被引：0

作者：

Subrahmanyam, V. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

QUANTUM INFORMATION & COMPUTATION | 2011年 / 11卷 / 1-2期

关键词：

Macroscopic Entanglement; Quantum Phase Transitions;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

Multi-Species entanglement, defined for a many-particle system as the entanglement between different species of particles, is shown to exist in the thermodynamic limit of the system size going to infinity. This macroscopic entanglement, as it can exhibit singular behavior, is capable of tracking quantum phase transitions. The entanglement between up and down spins has been analytically calculated for the one-dimensional Ising model in a transverse magnetic field. As the coupling strength is varied, the first derivative of the entanglement shows a jump discontinuity and the second derivative diverges near the quantum critical point,

引用

页码：1 / 7

页数：7

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