High Energy Theory Group Seminars

String Defects, Supersymmetry and the Swampland

by Carlo Angelantonj (Torino University)




We test Kim, Shiu and Vafa consistency conditions for six dimensional supergravity theories in explicit orientifold models. Based on the perturbative data, we conjecture the existence of null charges Q·Q= 0 for models with at least one tensor multiplet, coupling to string defects of charge Q. We use the new constraint to exclude some six-dimensional supersymmetric anomaly-free examples that have currently no string or F-theory realization. We also investigate the constraints in case where supersymmetry is broken in tachyon free vacua, with the breaking localised on antibranes.

Organized by

Davide Cassani