3 papers
hep-th2025
On The Black Hole Weak Gravity Conjecture and Extremality in the Strong-Field Regime
Sergio Barbosa, Sylvain Fichet, Lucas de Souza
We point out that the Weak Gravity Conjecture (WGC) implies that sufficiently small extremal black holes are necessarily in the strong-field regime of electrodynamics, and therefor…
hep-th2025
Vortex Fractional Fermion Number through Heat Kernel methods and Edge States
Sylvain Fichet, Rodrigo Fresneda, Lucas de Souza +1
Computing the vacuum expectation of fermion number operator on a soliton background is often challenging. A recent proposal in arXiv:2305.13606 simplifies this task by considering…
hep-th2025
Running Love Numbers and the Effective Field Theory of Gravity
Sergio Barbosa, Philippe Brax, Sylvain Fichet +1
Massive states produce higher derivative corrections to Einstein gravity in the infrared, which are encoded into operators of the Effective Field Theory (EFT) of gravity. These EFT…