Gravity Seminars

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Meeting ID: 948 5346 1679   Passcode: 780696

Monday, November 1, 2021
1:00 PM
Online, Room via Zoom
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"Black hole hair: from no-hair theorems to scalarization"

Professor Thomas Sotiriou , The University of Nottingham
[Host: Alexander Saffer]

In general relativity black holes are fully characterised by their mass, spin, and electromagnetic charge. No-hair theorems indicate that scalar fields cannot affect black hole spacetimes. However, the devil is in the details and, in practice, no-hair theorems allow us to identify a list of interesting exceptions in which scalar field leave their imprint on black holes. Such scenarios are of particular interest to gravitational wave searches for new fundamental physics. I will give an overview of how new fundamental scalars affect black hole spacetimes and of how this can be imprinted on gravitational wave observations.

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