PoS - Proceedings of Science
Volume 292 - Corfu Summer Institute 2016 "School and Workshops on Elementary Particle Physics and Gravity" (CORFU2016) - Workshop on Geometry and Physics, Ringberg Castle, 20-25 November 2016, invited contributions
Weak Gravity Conjecture and Black Holes in $N = 2$ Supergravity
G. Shiu*, W. Cottrell and P. Soler
Full text: pdf
Pre-published on: October 04, 2017
Published on: October 05, 2017
In a previous paper \cite{Cottrell:2016bty}, we used the entropy function formalism to argue that loops of charged particles can give unexpected contributions to the entropy of extremal black holes. Here, we show that similar results hold for loops of BPS particles in $\mathcal{N}=2$ supergravity, potentially connecting these results to familiar string setups. However, we will argue that string theory avoids these corrections altogether with the help of the Weak Gravity Conjecture. Finally, we discuss the relationship between these results and the semi-classical analysis of Antonov \cite{antonov,1989ApJS}, who showed that sub-extremal particles suffer a `gravo-thermal catastrophe' in the Newtonian limit.
DOI: https://doi.org/10.22323/1.292.0130
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