4 papers
Tracking the symmetries of -orbifold K3s within the Mathieu groups
Kasia Budzik, Anne Taormina, Mara Ungureanu +2
For -orbifold limits of K3, we provide a counterpart to the extensive studies by Nikulin and others of the geometry and symmetries of classical Kummer surfaces. In par…
Loop Corrected Supercharges from Holomorphic Anomalies
Kasia Budzik, Justin Kulp
We describe the loop corrections to supercharges in supersymmetric quantum field theories using the holomorphic twist formalism. We begin by reviewing the relation between supercha…
Supergroup Invariants and the Brane/Negative Brane Expansion
Kasia Budzik
We propose a Molien--Weyl-type formula computing generating functions of invariants of supergroups , i.e. polynomials in supertraces, which arise as gauge groups of brane/n…
Semi-Chiral Operators in 4d Gauge Theories
Kasia Budzik, Davide Gaiotto, Justin Kulp +3
We discuss the properties of quarter-BPS local operators in four dimensional supersymmetric Yang-Mills theory using the formalism of holomorphic twists. We study loop…