Fracton Topological Phases from Strongly Coupled Spin Chains

被引：84

作者：

Halasz, Gabor B. ^{[1
]}

Hsieh, Timothy H. ^{[1
]}

Balents, Leon ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 25期

基金：

美国国家科学基金会;

关键词：

Spin dynamics - Chains;

D O I：

10.1103/PhysRevLett.119.257202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We provide a new perspective on fracton topological phases, a class of three-dimensional topologically ordered phases with unconventional fractionalized excitations that are either completely immobile or only mobile along particular lines or planes. We demonstrate that a wide range of these fracton phases can be constructed by strongly coupling mutually intersecting spin chains and explain via a concrete example how such a coupled-spin-chain construction illuminates the generic properties of a fracton phase. In particular, we describe a systematic translation from each coupled-spin-chain construction into a parton construction where the partons correspond to the excitations that are mobile along lines. Remarkably, our construction of fracton phases is inherently based on spin models involving only two-spin interactions and thus brings us closer to their experimental realization.

引用

页数：5

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