Transport control in low-dimensional spin-1/2 Heisenberg systems

被引：22
|
作者：
Santos, Lea F. [1 ]
机构：
[1] Yeshiva Univ, Dept Phys, New York, NY 10016 USA
来源：
PHYSICAL REVIEW E | 2008年 / 78卷 / 03期
关键词：
D O I：
10.1103/PhysRevE.78.031125
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We analyze transport of local magnetization and develop schemes to control transport behavior in finite spin-1/2 Heisenberg chains and spin-1/2 Heisenberg two-leg ladders at zero temperature. By adjusting parameters in the Hamiltonians, these quantum systems may show both integrable and chaotic limits. We provide examples of chaotic systems leading to diffusive and to ballistic transport. In addition, methods of coherent quantum control to induce a transition from diffusive to ballistic transport are proposed.
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页数：8
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