Entanglement in 3D Kitaev spin liquids

Entanglement in 3D Kitaev spin liquids
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3D Kitaev 自旋液体中的纠缠

DOI:
10.1088/1742-5468/aac12c
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发表时间:
2018
期刊:
Theory and Experiment
影响因子:
--
通讯作者:
Matern S
Matern S
中科院分区:
--
文献类型:
--
作者:
Matern S

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量子自旋液体是一种自旋自由度分数化的量子液体。一类有趣的自旋液体是完全可解的三维Kitaev自旋液体。他们的分数激发马约纳拉费米子,这可能会表现出各种各样的拓扑能带结构,从拓扑保护的Weyl半金属节点半金属系统与马约纳拉费米表面。我们研究了这种Kitaev自旋液体的纠缠谱,并验证了它与拓扑保护边谱密切相关。此外,我们发现在某些情况下,纠缠谱包含更多的拓扑特征的信息比表面谱,从而提供了一个简单而可靠的工具来探测系统的拓扑结构。
Quantum spin liquids are highly fascinating quantum liquids in which the spin degrees of freedom fractionalize. An interesting class of spin liquids are the exactly solvable, three-dimensional Kitaev spin liquids. Their fractionalized excitations are Majonara fermions, which may exhibit a variety of topological band structures—ranging from topologically protected Weyl semi-metals over nodal semi-metals to systems with Majorana Fermi surfaces. We study the entanglement spectrum of such Kitaev spin liquids and verify that it is closely related to the topologically protected edge spectrum. Moreover, we find that in some cases the entanglement spectrum contains even more information about the topological features than the surface spectrum, and thus provides a simple and reliable tool to probe the topology of a system.
DOI: 10.1103/physrevlett.115.177205
发表时间: 2015-10-22
影响因子: 8.6
作者:
Hermanns, Maria;Trebst, Simon;Rosch, Achim
通讯作者: Rosch, Achim
DOI: 10.1103/physrevb.93.085101
发表时间: 2016-02-01
期刊: PHYSICAL REVIEW B
影响因子: 3.7
作者:
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通讯作者: Trebst, Simon
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
F. Pedrocchi;S. Chesi;D. Loss
通讯作者: D. Loss
Kitaev 模型在金刚石晶格上的 3D 推广的纠缠
DOI: --
发表时间: 2014
期刊:
影响因子: --
作者:
Ian Mondragon;T. Hughes
通讯作者: T. Hughes
DOI: 10.1103/physrevlett.73.2158
发表时间: 1994-10-17
影响因子: 8.6
作者:
LIEB, EH
通讯作者: LIEB, EH