The fuzzball paradigm

          @misc{ scivideos_PIRSA:17110082,
            doi = {10.48660/17110082},
            url = {https://pirsa.org/17110082},
            author = {Mathur, Samir},
            keywords = {Quantum Gravity},
            language = {en},
            title = {The fuzzball paradigm},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2017},
            month = {nov},
            note = {PIRSA:17110082 see, \url{https://scivideos.org/index.php/pirsa/17110082}}
          }
          

Abstract

The black hole information paradox poses a serious difficulty for theoretical physics. Over the last two decades there has emerged a resolution to this paradox in string theory, based on the discovery that heavy states in string theory swell up into horizon sized "fuzzballs". The talk will review the fuzzball construction and how the traditional semiclassical expectation of a vacuum horizon gets violated. It has been recently argued that objects with a surface like a fuzzball should behave like a "firewall" for infalling objects; we show that this firewall argument is inconsistent because its assumptions violate causality.