一维自旋系统结中新出现的Majorana模

Roman Jackiw Pub Date : 2020-02-16 DOI:10.1142/9789811210679_0017

D. Giuliano, A. Trombettoni, Pasquale Sodano

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引用次数: 1

摘要

凝聚态体系场论中马约拉纳费米子诱导的非局域效应与罗曼·杰基夫在相对论场论中发现的费米子电荷分形现象密切相关。我们展示了马约拉纳费米子的存在如何在相关的自旋链网络中被模仿，从而产生了多通道近藤效应的自旋模拟。这种自旋模拟的近藤效应与约瑟夫森阵列和唐克斯-吉拉多气体网络的相关性得到了强调。

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Emerging Majorana Modes in Junctions of One-Dimensional Spin Systems

The non-local effects induced by Majorana fermions in field theories for condensed matter systems are deeply related to the fermion charge fractionalization discovered by Roman Jackiw in relativistic field theories. We show how the presence of Majorana fermions may be mimicked in pertinent networks of spin chains inducing a spin analogue of the multi-channel Kondo effect. The relevance of this spin analogue of the Kondo effect for networks of Josephson arrays and Tonks-Girardeau gases is highlighted.

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Roman Jackiw

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