13–14 Nov 2025
UniCt - DFA
Europe/Rome timezone

(A)dS dilatonic black holes

13 Nov 2025, 15:20
25m
Conference Hall (UniCt - DFA)

Conference Hall

UniCt - DFA

Via S.Sofia n.64

Speaker

Carlo Branchina (Istituto Nazionale di Fisica Nucleare)

Description

The Weak Gravity Conjecture (WGC) was originally formulated for U(1) gauge theories in asymptotically flat spacetime, ensuring the decay of extremal Reissner-Nordström black holes and preventing the existence of stable remnants. This principle implies that gravity must be the weakest force for at least one particle, a condition consistent with observations. Since its proposal, several extensions have been studied, with particular attention to Einstein-Maxwell-dilaton theories and non-flat spacetimes. In this talk, I will discuss the existence conditions and properties of dilatonic black hole solutions with non-trivial dilaton potential in asymptotically (A)dS spacetimes. I will highlight how the strength of the dilaton coupling affects these solutions and examine the resulting implications for formulating an appropriate version of the Weak Gravity Conjecture in this setting.

Author

Carlo Branchina (Istituto Nazionale di Fisica Nucleare)

Presentation materials