Asymptotic expansion of the 𝒩 = 4 dyon degeneracy

Nabamita Banerjee, Dileep P Jatkar, Ashoke Sen
2009 Journal of High Energy Physics  
We study various aspects of power suppressed as well as exponentially suppressed corrections in the asymptotic expansion of the degeneracy of quarter BPS dyons in N=4 supersymmetric string theories. In particular we explicitly calculate the power suppressed corrections up to second order and the first exponentially suppressed corrections. We also propose a macroscopic origin of the exponentially suppressed corrections using the quantum entropy function formalism. This suggests a universal
more » ... n of exponentially suppressed corrections to all four dimensional extremal black hole entropies in string theory.
doi:10.1088/1126-6708/2009/05/121 fatcat:tmb2m7cervetro3b75piskig4m