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SUMMARY:New prospects in numerical relativity - Helvi Witek (King's Colleg
 e London\; University of Illinois at Urbana-Champaign)
DTSTART:20191002T123000Z
DTEND:20191002T133000Z
UID:TALK130663@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Both observations and deeply theoretical considerations indica
 te that general relativity\, our elegant standard model of gravity\, requi
 res modifications at high curvatures scales. Candidate theories of quantum
  gravity\, in their low-energy limit\, typically predict couplings to addi
 tional fields or extensions that involve higher curvature terms.<br> <br> 
 At the same time\, the breakthrough discovery of gravitational waves has p
 rovided a new channel to probe gravity in its most extreme\, strong-field 
 regime. Modelling the expected gravitational radiation in these extensions
  of general relativity enables us to search for - or place novel observati
 onal bounds on - deviations from our standard model. In this talk I will g
 ive an overview of the recent progress on simulating binary collisions in 
 these situations and address renewed mathematical challenges such as well-
 posedness of the underlying initial value formulation.
LOCATION:Seminar Room 1\, Newton Institute
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