PIRSA:22110048

Video URL

https://pirsa.org/22110048

Symmetries of Black Hole Perturbation Theory

Solomon, A. (2022). Symmetries of Black Hole Perturbation Theory. Perimeter Institute for Theoretical Physics. https://pirsa.org/22110048

Solomon, Adam. Symmetries of Black Hole Perturbation Theory. Perimeter Institute for Theoretical Physics, Nov. 03, 2022, https://pirsa.org/22110048 

          @misc{ scivideos_PIRSA:22110048,
            doi = {10.48660/22110048},
            url = {https://pirsa.org/22110048},
            author = {Solomon, Adam},
            keywords = {Strong Gravity},
            language = {en},
            title = {Symmetries of Black Hole Perturbation Theory},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2022},
            month = {nov},
            note = {PIRSA:22110048 see, \url{https://scivideos.org/pirsa/22110048}}
          }

Adam Solomon McMaster University

Talk numberPIRSA:22110048
DOI10.48660/22110048
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I discuss novel symmetries of perturbation theory around rotating and non-rotating black holes in general relativity, and discuss their origins and implications for gravitational-wave astronomy. This is motivated by two special aspects of black hole perturbations in four dimensions: isospectrality of quasinormal modes and the vanishing of tidal Love numbers. There turn out to be off-shell symmetries underlying each of these phenomena. One is a duality, which on shell reproduces the famous Chandrasekhar duality and therefore underlies isospectrality, and can be thought of as an extension of electric-magnetic duality to black hole backgrounds. The other is a set of "ladder symmetries" relating modes of different angular momentum or spin, which imply the vanishing of Love numbers. This has a geometric origin in the conformal symmetry of low-frequency modes.

Zoom link:  https://pitp.zoom.us/j/93633894223?pwd=cEFRYno5WSt5NUJlOWJLdVZHWjE1QT09