Forty years after the discovery of Hawking radiation, its exact nature remains elusive. If
Hawking radiation does not carry any information out from the ever shrinking black hole, it …

Over the past three decades, black holes have played an important role in quantum gravity,
mathematical physics, numerical relativity and gravitational wave phenomenology …

Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

Extended scalar-tensor Gauss-Bonnet (ESTGB) gravity has been recently argued to exhibit
spontaneous scalarization of vacuum black holes (BHs). A similar phenomenon can be …

We discuss aspects of global and gauged symmetries in quantum field theory and quantum
gravity, focusing on discrete gauge symmetries. An effective Lagrangian description of Z p …

We give analytical arguments and demonstrate numerically the existence of black hole
solutions of the 4D effective superstring action in the presence of Gauss-Bonnet quadratic …

A bstract We consider the shift of charge-to-mass ratio for extremal black holes in the context
of effective field theory, motivated by the Weak Gravity Conjecture. We constrain extremality …

A bstract We investigate the behavior of the Weak Gravity Conjecture (WGC) under toroidal
compactification and RG flows, finding evidence that WGC bounds for single photons …

Simpson and Visser recently proposed a phenomenological way to avoid some kinds of
space-time singularities by replacing a parameter whose zero value corresponds to a …

A static and circularly symmetric lens characterized by mass and scalar charge parameters
is constructed. For the small values of the scalar charge to the mass ratio, the gravitational …