“Bulletin Board”

 School of Particles and Accelerator - July 10, 2014

Theory Weekly Seminar(TWS)

BPS State Counting in N=8 Supersymmetric String Theory for Pure D-brane Configurations
Abhishek Chowdhury, Harish-Chandra Research Institute, India
July 10, 2014
Larak Seminar Room


Abstract: Exact results for the BPS index are known for a class of BPS dyons in type II string theory compactified on a six dimensional torus. In this paper we set up the problem of counting the same BPS states in a duality frame in which the states carry only Ramond-Ramond charges. We explicitly count the number of states carrying the lowest possible charges and find agreement with the result obtained in other duality frames. Furthermore, we find that after factoring out the supermultiplet structure, each of these states carry zero angular momentum. This is in agreement with the prediction obtained from a representation of these states as supersymmetric black holes.

Time: Thursday, July 10, 2014 at 11:00 in Larak Seminar Room
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