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VERSION:2.0
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BEGIN:VEVENT
SUMMARY:Black hole scattering with numerical methods and the resummation o
 f weak-field analytic expressions
DTSTART:20260430T143000Z
DTEND:20260430T160000Z
DTSTAMP:20260914T150736Z
UID:bcd353f4-c4ab-4a68-8868-e69d155534af
SEQUENCE:2
CREATED:20260428T091048Z
DESCRIPTION:Recent advances in modelling unbound binary black hole interac
 tions have been driven by the application of scattering amplitude methods 
 from high-energy physics to generate results within the post-Minkowskian (
 PM) expansion. However\, this expansion breaks down when approaching the s
 trong-field regime\, where large curvature effects become non-negligible. 
 In this talk\, I will present recent progress in the numerical modelling o
 f strong-field black hole scattering using two complementary approaches. F
 irst\, I will demonstrate how compactified hyperboloidal coordinates enabl
 e stable evolution of the Teukolsky equation in the self-force (SF) framew
 ork. Second\, I will show how strong-field SF information can be used to r
 esum the weak-field PM and post-Newtonian series\, yielding accurate predi
 ctions of radiative quantities across all separations for both bound and u
 nbound orbits. Finally\, I will discuss the adaptation of the Spectral Ein
 stein Code (SpEC) to perform highly accurate Numerical Relativity simulati
 ons of black hole scattering\, which have allowed the extraction of higher
 -order SF coefficients and the benchmarking of PM expressions.
LAST-MODIFIED:20260428T091057Z
LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building
URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/black-hole-scattering-with
 -numerical-methods-and-the-resummation-of-weak-field-analytic-expressions/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="wz5gd">Recent advances in 
 modelling unbound binary black hole interactions have been driven by the a
 pplication of scattering amplitude methods from high-energy physics to gen
 erate results within the post-Minkowskian (PM) expansion. However\, this e
 xpansion breaks down when approaching the strong-field regime\, where larg
 e curvature effects become non-negligible. In this talk\, I will present r
 ecent progress in the numerical modelling of strong-field black hole scatt
 ering using two complementary approaches.<br/><br/> First\, I will demonst
 rate how compactified hyperboloidal coordinates enable stable evolution of
  the Teukolsky equation in the self-force (SF) framework. Second\, I will 
 show how strong-field SF information can be used to resum the weak-field P
 M and post-Newtonian series\, yielding accurate predictions of radiative q
 uantities across all separations for both bound and unbound orbits.<br/><b
 r/> Finally\, I will discuss the adaptation of the Spectral Einstein Code 
 (SpEC) to perform highly accurate Numerical Relativity simulations of blac
 k hole scattering\, which have allowed the extraction of higher-order SF c
 oefficients and the benchmarking of PM expressions.<br/></p>
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