December 3, 2020 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Frans Pretorius
Princeton University
Testing General Relativity with Black Hole Mergers
Testing the predictions of general relativity in the dynamical
strong-field regime, in particular black holes and their dynamics,
has only recently become possible with LIGO/Virgo observations of
black hole mergers. I will review some of the tests that have
been performed to date. However, one obstacle to extracting the
most stringent constraints possible is the lack of predictions of
what black hole coalescence should "sound" like in modified gravity
theories (or theories that offer exotic alternatives to black holes).
To make things worse, there are doubts as to how well-posed many
modified gravity theories are that have been claimed would give observably
different merger waveforms. One such theory is Einstein-dilaton-Gauss-Bonnet
(EdGB) gravity. I will describe results trying to address the well-posedness
of EdGB gravity in the non-linear regime. Restricting to gravitational
collapse in spherical symmetry, we find that there is an uncomfortably
small region of parameter space in the strong-field regime where EdGB gravity
can still make sense as a classical extension to general relativity.
December 11, 2020 Friday 11:00 AM
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Zoom
Physics Colloquia
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colloquia)
Eberhard Bodenschatz
Gottingen
TBA
January 28, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
William Oliver
MIT
TBA
February 4, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Feryal Ozel
ASU
TBA
February 11, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Marcelle Soares-Santos
Michigan
TBA
February 19, 2021 Friday 11:00 AM
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Zoom
Physics Colloquia
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colloquia)
Hiranya Peiris
London
TBA
February 25, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Peter Graham
Stanford
TBA
March 4, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Leonardo Rastelli
SUNY SB
TBA
March 11, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Andrew Wray
New York University
TBA
March 25, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Aizenberg Joanna
Harvard
TBA
April 1, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Vijay Balasubramanian
University of Pennsylvania
TBA
April 8, 2021 Thursday 12:16 PM
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Zoom
Physics Colloquia
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colloquia)
Tanniemola Liverpool
Bristol
TBA
April 15, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Chetan Nayak
Microsoft
TBA
April 22, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Eva Andrei
Rutgers
TBA
April 29, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
David Weitz
Harvard
TBA
May 6, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Cumrun Vafa
Harvard
TBA
May 13, 2021 Thursday 4:00 PM
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Zoom
Physics Colloquia
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colloquia)
Vashti Sawtelle
Michigan State
TBA
