In-Person

Particle Theory Seminar - Ryan Lanzetta - Perimeter Institute for Theoretical Physics

Rhyan Lanzetta
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Sloane Physics Laboratory, 51
217 Prospect Street New Haven, CT 06511
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Unitarity bounds on cusps

I will discuss various properties of the cusp anomalous dimension of conformal line defects that follow from cutting and gluing consistency of various defect geometries. Some key results I will present are an optimal universal bound on the cusp anomalous dimension of a right angle cusp and a derivation of a new property of the cusp anomalous dimension that we refer to as “conformal concavity.” I will discuss som implications of these bounds for the physics of line defects, particularly in the context of defect fusion.

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Biography: Ryan Lanzetta received his PhD from the University of Washington, Seattle in 2024. He is now a postdoctoral fellow at the Perimeter Institute for Theoretical Physics in Waterloo, ON, Canada.

Host: Ian Moult