摘要翻译:
报道了有限Heisenberg XXZ自旋1/2链的绝缘区(J_x<J_z)中远平衡量子自旋输运的负微分电导率。对于n=4自旋的小链,用解析方法再现了这一现象,并进一步用随机自旋浴的有效纯态模拟对n=16自旋的小链进行了数值分析。
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英文标题:
《Negative differential conductivity in Heisenberg XXZ chain far from
equilibrium》
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作者:
Tomaz Prosen
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Quantum Physics 量子物理学
分类描述:Description coming soon
描述即将到来
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
Negative differential conductivity is reported for the far from equilibrium quantum spin transport in the insulating regime (J_x < J_z) of finite Heisenberg XXZ spin 1/2 chains. The phenomenon is reproduced analytically for small chains of N=4 spins and further analyzed numerically, for up to N=16, using an efficient pure-state simulation with stochastic spin baths.
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PDF链接:
https://arxiv.org/pdf/704.2252