Counting Exceptional Instantons [PDF]
Christoph A. Keller, Jaewon SongWe show how to obtain the instanton partition function of N=2 SYM with exceptional gauge group EFG using blow-up recursion relations derived by Nakajima and Yoshioka. We compute the two instanton contribution and match it with the recent proposal for the superconformal index of rank 2 SCFTs with E6, E7 global symmetry.View original: http://arxiv.org/abs/1205.4722
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