6 papers
Non-Invertible Symmetries and Boundaries for Two-Dimensional Fermions
Guillermo Arias-Tamargo, Philip Boyle Smith, Rishi Mouland +1
We study the relation between boundary conditions and categorical symmetries of two-dimensional fermionic conformal field theories. We determine all anomaly-free invertible global…
Symmetries, anomalies, and dualities of two-dimensional Non-Linear Sigma Models
Guillermo Arias-Tamargo, Maxwell L. Velásquez Cotini Hutt
We analyse the global symmetry structure of two-dimensional Non-Linear Sigma Models with Wess-Zumino term. When the target space has a compact isometry without fixed points, the th…
Non-invertible symmetries of two-dimensional Non-Linear Sigma Models
Guillermo Arias-Tamargo, Chris Hull, Maxwell L. Velásquez Cotini Hutt
Global symmetries can be generalised to transformations generated by topological operators, including cases in which the topological operator does not have an inverse. A family of…
On brane systems with O planes -- 5d and 6d SCFTs
Mohammad Akhond, Guillermo Arias-Tamargo, Federico Carta +2
We study Higgs branches of field theories with 8 supercharges in 5 and 6 dimensions, focusing on theories realised on 5-brane webs in Type IIB with an O plane, or a D6-D8-NS5…
Non-renormalisation of coupling constants from categorical symmetries in two dimensions
Guillermo Arias-Tamargo, Chris Hull, Maxwell L. Velásquez Cotini Hutt
We study the role of categorical symmetries in constraining the renormalisation of couplings in two-dimensional non-linear sigma models with Wess-Zumino term. A large class of thes…
Disconnected gauge groups in the infrared
Guillermo Arias-Tamargo, Mario De Marco
Gauging a discrete 0-form symmetry of a QFT is a procedure that changes the global form of the gauge group but not its perturbative dynamics. In this work, we study the Seiberg-Wit…