Spectrum of dyons and black holes in CHL orbifolds using Borcherds lift

@article{Dabholkar2007SpectrumOD,
  title={Spectrum of dyons and black holes in CHL orbifolds using Borcherds lift},
  author={A. Dabholkar and S. Nampuri},
  journal={Journal of High Energy Physics},
  year={2007},
  volume={2007},
  pages={077-077}
}
The degeneracies of supersymmetric quarter BPS dyons in four dimensions and of spinning black holes in five dimensions in a CHL compactification are computed exactly using Borcherds lift. The Hodge anomaly in the construction has a physical interpretation as the contribution of a single M-theory Kaluza-Klein 6-brane in the 4d-5d lift. Using factorization, it is shown that the resulting formula has a natural interpretation as a two-loop partition function of left-moving heterotic string… Expand

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