On resummation of the irregular conformal block

2018/12/08 by Alekseev, S., Litvinov, M.
#FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Mathematical Physics (math-ph)

paper · doi:10.48550/arxiv.1812.03387

Abstract

We discuss the resummation procedure of the superpotential in 4d N=2 SYM theory without matter from the point of view of 2d Liouville conformal field theory, utilizing the AGT correspondence. We identify contributions of different descendants of the intermediate state, defining a conformal block in CFT, to the superpotential and answer the question, which descendants are responsible for the appearance of the branch cuts in the superpotential.

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