34 citations · 54 across the 9 of their papers we have counts for
10 papers
Gauss Law, Monodromy Defect, Magnetic Lattice Translation, and Lattice Duality
Pengcheng Wei, Yunqin Zheng
In a Hamiltonian lattice gauge theory, the physical Hilbert space is fixed by the Gauss law, by choosing an eigenspace of the Gauss law operator which generates the gauge transform…
Non-invertible Symmetries in Weyl Fermions, and Applications to Fermion-Boundary Scattering Problem
Pengcheng Wei, Yunqin Zheng
We construct a family of non-invertible topological defects in two-dimensional theories of Weyl fermions. The construction relies on the existence of -symmetric conformal bo…
On the Absence of Symmetric Simple Conformal Boundary Conditions
Pengcheng Wei, Yunqin Zheng
Non-trivial 't Hooft anomaly obstructs the existence of a simple symmetric conformal boundary condition in a CFT. Conversely, there is a common piece of lore that trivial 't Hooft…
Haagerup Symmetry in ?
Jan Albert, Yamato Honda, Justin Kaidi +1
We suggest that the chiral theory -- in many senses the simplest VOA -- may have Haagerup symmetry for . Likewise, we suggest that the…
Non-Local Conserved Currents and Continuous Non-Invertible Symmetries
Diego Delmastro, Adar Sharon, Yunqin Zheng
We embark on a systematic study of continuous non-invertible symmetries, focusing on 1+1d CFTs. We describe a generalized version of Noether's theorem, where continuous non-inverti…
Noninvertible Symmetry-Resolved Affleck-Ludwig-Cardy Formula and Entanglement Entropy from the Boundary Tube Algebra
Yichul Choi, Brandon C. Rayhaun, Yunqin Zheng
We derive a refined version of the Affleck-Ludwig-Cardy formula for a 1+1d conformal field theory, which controls the asymptotic density of high energy states on an interval transf…
Generalized Tube Algebras, Symmetry-Resolved Partition Functions, and Twisted Boundary States
Yichul Choi, Brandon C. Rayhaun, Yunqin Zheng
We introduce a class of generalized tube algebras which describe how finite, non-invertible global symmetries of bosonic 1+1d QFTs act on operators which sit at the intersection po…
Non-invertible and higher-form symmetries in 2+1d lattice gauge theories
Yichul Choi, Yaman Sanghavi, Shu-Heng Shao +1
We explore exact generalized symmetries in the standard 2+1d lattice gauge theory coupled to the Ising model, and compare them with their continuum field theory coun…
Dimensionally Reducing Generalized Symmetries from (3+1)-Dimensions
Emily Nardoni, Matteo Sacchi, Orr Sela +2
Recently there has been an increasing interest in the study of generalized symmetries in dimensions higher than two. This has lead to the discovery of various manifestations of gen…
Backfiring Bosonisation
Philip Boyle Smith, Yunqin Zheng
For a fermionic quantum field theory in dimensions, there is a subtle difference between summing over spin structures and gauging . If the gravitational anomaly van…