Black holes in Horndeski theories

          @misc{ scivideos_PIRSA:24070030,
            doi = {10.48660/24070030},
            url = {https://pirsa.org/24070030},
            author = {Charmousis, Christos},
            keywords = {Cosmology, Strong Gravity, Mathematical physics},
            language = {en},
            title = {Black holes in Horndeski theories},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2024},
            month = {jul},
            note = {PIRSA:24070030 see, \url{https://scivideos.org/pirsa/24070030}}
          }
          

Abstract

We will discuss black hole solutions in Horndeski and beyond Horndeski theories. Starting from the no hair paradigm in GR we will elaborate on one of the first black hole solutions with secondary hair. We will then start by introducing stealth solutions, in other words GR metrics endowed with a non trivial scalar field, their regularity properties, shortcomings etc. We will then go on to construct black holes with primary scalar hair which can be regular black holes and modify usual GR static metrics. We will discuss their properties and the status of explicit stationary metrics to conclude.