Representation theory of solitons

C Cordova, N Holfester, K Ohmori - arxiv preprint arxiv:2408.11045, 2024 - arxiv.org
Solitons in two-dimensional quantum field theory exhibit patterns of degeneracies and
associated selection rules on scattering amplitudes. We develop a representation theory that …

Codimension-2 defects and higher symmetries in (3+ 1) D topological phases

M Barkeshli, YA Chen, SJ Huang, R Kobayashi… - SciPost Physics, 2023 - scipost.org
D topological phases of matter can host a broad class of non-trivial topological defects of
codimension-1, 2, and 3, of which the well-known point charges and flux loops are special …

Matrix product operator symmetries and intertwiners in string-nets with domain walls

L Lootens, J Fuchs, J Haegeman, C Schweigert… - SciPost Physics, 2021 - scipost.org
We provide a description of virtual non-local matrix product operator (MPO) symmetries in
projected entangled pair state (PEPS) representations of string-net models. Given such a …

Revisiting the symmetry-resolved entanglement for non-invertible symmetries in d conformal field theories

J Heymann, T Quella - arxiv preprint arxiv:2409.02315, 2024 - arxiv.org
Recently, a framework for computing the symmetry-resolved entanglement entropy for non-
invertible symmetries in $1 {+} 1$ d conformal field theories has been proposed by Saura …

The boundaries and twist defects of the color code and their applications to topological quantum computation

MS Kesselring, F Pastawski, J Eisert, BJ Brown - Quantum, 2018 - quantum-journal.org
The color code is both an interesting example of an exactly solved topologically ordered
phase of matter and also among the most promising candidate models to realize fault …

Composing topological domain walls and anyon mobility

P Huston, F Burnell, C Jones, D Penneys - SciPost Physics, 2023 - scipost.org
Topological domain walls separating 2+ 1 dimensional topologically ordered phases can be
understood in terms of Witt equivalences between the UMTCs describing anyons in the bulk …

Higher-group symmetry of (3+1)D fermionic gauge theory: Logical CCZ, CS, and T gates from higher symmetry

M Barkeshli, PS Hsin, R Kobayashi - SciPost Physics, 2024 - scipost.org
It has recently been understood that the complete global symmetry of finite group topological
gauge theories contains the structure of a higher-group. Here we study the higher-group …

Tannakian QFT: from spark algebras to quantum groups

T Dimofte, W Niu - arxiv preprint arxiv:2411.04194, 2024 - arxiv.org
We propose a nonperturbative construction of Hopf algebras that represent categories of
line operators in topological quantum field theory, in terms of semi-extended operators …

Topological aspects of the critical three-state Potts model

R Vanhove, L Lootens, HH Tu… - Journal of Physics A …, 2022 - iopscience.iop.org
We explore the topological defects of the critical three-state Potts spin system on the torus,
Klein bottle and cylinder. A complete characterization is obtained by breaking down the …

Computing data for Levin-Wen with defects

JC Bridgeman, D Barter - Quantum, 2020 - quantum-journal.org
Computing data for Levin-Wen with defects Page 1 Computing data for Levin-Wen with defects
Jacob C. Bridgeman1 and Daniel Barter2 1Perimeter Institute for Theoretical Physics, Waterloo …