Exactly solvable models for U(1) symmetry-enriched topological phases
Strongly Correlated Electrons
2022-09-21 v2 High Energy Physics - Theory
Quantum Physics
Abstract
We propose a general construction of commuting projector lattice models for 2D and 3D topological phases enriched by U(1) symmetry, with finite-dimensional Hilbert space per site. The construction starts from a commuting projector model of the topological phase and decorates U(1) charges to the state space in a consistent manner. We show that all 2D U(1) symmetry-enriched topological phases which allow gapped boundary without breaking symmetry, can be realized through our construction. We also construct a large class of 3D topological phases with U(1) symmetry fractionalized on particles or loop excitations.
Cite
@article{arxiv.2103.13399,
title = {Exactly solvable models for U(1) symmetry-enriched topological phases},
author = {Qing-Rui Wang and Meng Cheng},
journal= {arXiv preprint arXiv:2103.13399},
year = {2022}
}
Comments
16 pages, 2 figures