Speaker: Leonardo Santilli (YMSC, Tsinghua University)
Abstract: I will highlight some tensions in the current treatment of higher form symmetries, when the theory possesses a (d-1)-form symmetry. I will then show how, for invertibile symmetries, the tensions are automatically resolved in the formalism of gerbes. After this general introduction and motivation, I will present a detailed study of gauging the 1-form symmetry of pure 2d Yang-Mills. I will identify the orbifolds in which charge conjugation is spontaneously broken. I will then explore lower form symmetries in M-theory compactificarions, based on joint work with Richard J. Szabo
Time: 17:00-18:30, Thur., Oct 17., 2024
Location: Room 1610, Block A, No. 657 Songhu Road, Yangpu District, Shanghai
Zoom Meeting No.: 423 317 8953 (Passcode: SIMIS)