NYU Arts & Science

Physics Colloquia

December 3, 2020 Thursday 4:00 PM  +
Zoom
Physics Colloquia (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  +
Zoom
Physics Colloquia (colloquia)


Eberhard Bodenschatz
Gottingen

TBA



January 28, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


William Oliver
MIT

TBA



February 4, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Feryal Ozel
ASU

TBA



February 11, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Marcelle Soares-Santos
Michigan

TBA



February 19, 2021 Friday 11:00 AM  +
Zoom
Physics Colloquia (colloquia)


Hiranya Peiris
London

TBA



February 25, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Peter Graham
Stanford

TBA



March 4, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Leonardo Rastelli
SUNY SB

TBA



March 11, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Andrew Wray
New York University

TBA



March 25, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Aizenberg Joanna
Harvard

TBA



April 1, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Vijay Balasubramanian
University of Pennsylvania

TBA



April 8, 2021 Thursday 12:16 PM  +
Zoom
Physics Colloquia (colloquia)


Tanniemola Liverpool
Bristol

TBA



April 15, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Chetan Nayak
Microsoft

TBA



April 22, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Eva Andrei
Rutgers

TBA



April 29, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


David Weitz
Harvard

TBA



May 6, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Cumrun Vafa
Harvard

TBA



May 13, 2021 Thursday 4:00 PM  +
Zoom
Physics Colloquia (colloquia)


Vashti Sawtelle
Michigan State

TBA