PIRSA:19030123

Slow Roll with a Black Hole (and other scalar tails)

Gregory, R. (2019). Slow Roll with a Black Hole (and other scalar tails). Perimeter Institute. https://pirsa.org/19030123

Gregory, Ruth. Slow Roll with a Black Hole (and other scalar tails). Perimeter Institute, Mar. 26, 2019, https://pirsa.org/19030123 

          @misc{ pirsa_PIRSA:19030123,
            doi = {10.48660/19030123},
            url = {https://pirsa.org/19030123},
            author = {Gregory, Ruth},
            keywords = {Cosmology},
            language = {en},
            title = {Slow Roll with a Black Hole (and other scalar tails)},
            publisher = {Perimeter Institute},
            year = {2019},
            month = {mar},
            note = {PIRSA:19030123 see, \url{https://pirsa.org}}
          }

Ruth Gregory King's College London

DOI 10.48660/19030123
Collection
Talk Type Scientific Series
Subject

Abstract

I'll discuss recent work on finding time-dependent solutions of a black hole interacting with a scalar field. I'll discuss two distinct cases where the back-reaction of the scalar can be found. First, in the case that the scalar is slowly rolling (such as in inflation) the scalar field can be found in terms of super-advanced time coordinate, regular on both horizons. The scalar back-reacts on the geometry, with the black hole accreting and growing more or less as expected. The second case I'll describe briefly is scalar hair in modified gravity - giving a scalar-dressed rotating black hole that is finite on both horizons.