80 citations · 80 across the 3 of their papers we have counts for
4 papers
Beyond Wigner: Non-Invertible Symmetries Preserve Probabilities
Thomas Bartsch, Yuhan Gai, Sakura Schafer-Nameki
In recent years, the traditional notion of symmetry in quantum theory was expanded to so-called generalised or categorical symmetries, which, unlike ordinary group symmetries, may…
Unitary Categorical Symmetries
Thomas Bartsch
Global invertible symmetries act unitarily on local observables or states of a quantum system. In this note, we aim to generalise this statement to non-invertible symmetries by con…
On Unitary 2-Group Symmetries
Thomas Bartsch
Global internal symmetries act unitarily on local observables or states of a quantum system. In this note, we aim to generalise this statement to extended observables by considerin…
Non-invertible Symmetries and Higher Representation Theory I
Thomas Bartsch, Mathew Bullimore, Andrea E. V. Ferrari +1
The purpose of this paper is to investigate the global categorical symmetries that arise when gauging finite higher groups in three or more dimensions. The motivation is to provide…