Mock modularity from black hole scattering states

Abstract The exact degeneracies of quarter-BPS dyons in Type II string theory on K3 × T 2 are given by Fourier coefficients of the inverse of the Igusa cusp form. For a fixed magnetic charge invariant m, the generating function of these degeneracies naturally decomposes as a sum of two parts, which...

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Bibliographic Details
Main Authors: Sameer Murthy, Boris Pioline
Format: Article
Language:English
Published: SpringerOpen 2018-12-01
Series:Journal of High Energy Physics
Subjects:
Online Access:http://link.springer.com/article/10.1007/JHEP12(2018)119