Speaker: Marwan Najjar (Peking University)
Abstract : We present a systematic study of Symmetry Topological Field Theories (SymTFTs) within the geometric engineering program of M-theory. Beginning with a review of geometric engineering foundations, we develop the framework for constructing SymTFT actions. We then detail the construction of topological operators for p-form (discrete and continuous abelian) symmetries and their charged defects, identifying the precise M-theory objects that encode these structures—including (-1)-form symmetries.
Our focus centres on the SymTFT for 4D N=1 theories engineered from M-theory on G2-holonomy spaces. Through this lens, we derive key properties of the 4D effective theory, such as:
- Modified instanton sums,
- Emergent 4-group symmetry structures.
Time: 5:00 – 6:30 PM, May 20, Tuesday.
Location: Room 1410 at SIMIS, Block A, No. 657 Songhu Road, Yangpu District, Shanghai
Zoom Meeting ID: 838 293 7191 (Passcode: SIMIS)
English 
简体中文