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FIELD Phys:StringTheory
DATE April 24 (Mon), 2017
TIME 16:00-17:30
PLACE 1423
SPEAKER  
HOST Hwang, Chiung
INSTITUTE National Taiwan University
TITLE Emergence of Supergroups from Junctions of Branes
ABSTRACT

It has been recently argued that supergroups emerge from junctions of branes in string theory and M-theory (arXiv:1410.1175, arXiv:1703.00982, arXiv:1512.06646). We study the BPS indices of the supergroup WZW models which may describe certain junctions of M2-branes and M5-branes. We find that the vacuum configurations of the brane system are in one-to-one correspondence with the weight diagrams of the associated Lie superalgebras. For the case arising from the BLG model an explicit expression can be given in terms of a mock modular form. We discuss the physical implications of the mock modularity and its modular completion of the index, at the cost of a holomorphic anomaly. We will also consider the alternative matrix quantum mechanical descriptions of the supergroup WZW models.

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