TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.16.4.110
TI  - Higher categorical symmetries and gauging in two-dimensional spin systems
PY  - 2024/04/23
UR  - https://scipost.org/SciPostPhys.16.4.110
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 16
IS  - 4
SP  - 110
A1  - Delcamp, Clement
AU  - Tiwari, Apoorv
AB  - We present a framework to systematically investigate higher categorical symmetries in two-dimensional spin systems. Though exotic, such generalised symmetries have been shown to naturally arise as dual symmetries upon gauging invertible symmetries. Our framework relies on an approach to dualities whereby dual quantum lattice models only differ in a choice of module 2-category over some input fusion 2-category. Given an arbitrary two-dimensional spin system with an ordinary symmetry, we explain how to perform the (twisted) gauging of any of its sub-symmetries. We then demonstrate that the resulting model has a symmetry structure encoded into the Morita dual of the input fusion 2-category with respect to the corresponding module 2-category. We exemplify this approach by specialising to certain finite group generalisations of the transverse-field Ising model, for which we explicitly define lattice symmetry operators organised into fusion 2-categories of higher representations of higher groups.
ER  -

@Article{10.21468/SciPostPhys.16.4.110,
	title={{Higher categorical symmetries and gauging in two-dimensional spin systems}},
	author={Clement Delcamp and Apoorv Tiwari},
	journal={SciPost Phys.},
	volume={16},
	pages={110},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.16.4.110},
	url={https://scipost.org/10.21468/SciPostPhys.16.4.110},
}