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Generalized Lieb-Schultz-Mattis theorem on bosonic symmetry protected topological phases

by Shenghan Jiang, Meng Cheng, Yang Qi, Yuan-Ming Lu

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Submission summary

Authors (as registered SciPost users): Meng Cheng · Shenghan Jiang
Submission information
Preprint Link: https://arxiv.org/abs/1907.08596v2  (pdf)
Date accepted: 2021-08-04
Date submitted: 2021-05-18 02:48
Submitted by: Jiang, Shenghan
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
Specialties:
  • Condensed Matter Physics - Theory
  • Mathematical Physics
Approach: Theoretical

Abstract

We propose and prove a family of generalized Lieb-Schultz-Mattis (LSM) theorems for symmetry protected topological (SPT) phases on boson/spin models in any dimensions. The "conventional" LSM theorem, applicable to e.g. any translation invariant system with an odd number of spin-1/2 particles per unit cell, forbids a symmetric short-range-entangled ground state in such a system. Here we focus on systems with no LSM anomaly, where global/crystalline symmetries and fractional spins within the unit cell ensure that any symmetric SRE ground state must be a nontrivial SPT phase with anomalous boundary excitations. Depending on models, they can be either strong or "higher-order" crystalline SPT phases, characterized by nontrivial surface/hinge/corner states. Furthermore, given the symmetry group and the spatial assignment of fractional spins, we are able to determine all possible SPT phases for a symmetric ground state, using the real space construction for SPT phases based on the spectral sequence of cohomology theory. We provide examples in one, two and three spatial dimensions, and discuss possible physical realization of these SPT phases based on condensation of topological excitations in fractionalized phases.

Published as SciPost Phys. 11, 024 (2021)


Reports on this Submission

Anonymous Report 1 on 2021-7-19 (Invited Report)

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The authors have adequately responded to all the comments. I recommend the publication of this manuscript.

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