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Generalized Lieb-Schultz-Mattis theorem on bosonic symmetry protected topological phases
2021
SciPost Physics
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
doi:10.21468/scipostphys.11.2.024
fatcat:6kx6ckslozb4jmm2mkp3qpuvby