Physics

The superconformal R-charges of 4d supersymmetric gauge theories can be exactly determined by maximizing a cubic function, constructed from 't Hooft anomalies. This ties in with Cardy's conjectured 4d analog of the c-theorem. It also implies that...

We obtain relations among boundary states in bosonic minimal open string theory using the boundary ground ring. We also obtain a difference equation that boundary correlators must satisfy.