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BEGIN:VEVENT
SUMMARY:Self-force in black hole scattering: a scalar-field toy model (Chr
is Whittall)
DTSTART;VALUE=DATE-TIME:20240320T093000Z
DTEND;VALUE=DATE-TIME:20240320T103000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2930@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Chris Whittall ()\nCalculations of the scattering an
gle in hyperbolic black hole encounters have been of recent cross-discipli
nary interest\, driven by its potential to advance post-Minkowskian theory
and the effective-one-body model of binary dynamics. In this talk I will
consider the self-force approach to modelling black hole scattering\, star
ting with a general introduction to self-force theory and the motivation f
or self-force scattering. I will then introduce the scalar-field toy model
that has been widely used in recent self-force scattering research\, and
describe our efforts to develop a frequency-domain numerical method to cal
culate the scalar-field self-force during hyperbolic encounters. I will en
d the talk by discussing some ongoing areas of work in self-force scatteri
ng\, in particular the use of self-force results to resum analytical post-
Minkowskian series\, and work to obtain analytical results for the self-fo
rce at early and late times along scattering orbits.\n\nhttps://indico.ph.
ed.ac.uk/event/278/contributions/2930/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2930/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Conservative Black Hole Scattering at 5PM-1SF Order (Gustav Mogull
)
DTSTART;VALUE=DATE-TIME:20240322T110000Z
DTEND;VALUE=DATE-TIME:20240322T120000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2935@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Gustav Mogull ()\nIn this talk I will discuss our re
cent calculation of the conservative fifth post-Minkowskian (5PM) scatteri
ng angle\, at first order in self-force\, using the Worldline Quantum Fiel
d Theory (WQFT) formalism. This challenging calculation involved performin
g four-loop Feynman integrals\, and surprisingly resulted in a total absen
ce of the elliptic functions present at 4PM order — the entire result is
expressed on a basis of weight-3 multiple polylogarithms (MPLs).\n\nhttps
://indico.ph.ed.ac.uk/event/278/contributions/2935/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2935/
END:VEVENT
BEGIN:VEVENT
SUMMARY:ACV\, BCJ\, EFT\, EOB\, MPM\, PM\, PN\, QFT\, SF\, WQFT and All Th
at (Thibault Damour)
DTSTART;VALUE=DATE-TIME:20240319T093000Z
DTEND;VALUE=DATE-TIME:20240319T103000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2925@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Thibault Damour (IHES)\nA personal perspective on t
he recently explored synergies between various\napproaches to the general
relativistic two-body problem will be presented.\n\nhttps://indico.ph.ed.a
c.uk/event/278/contributions/2925/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2925/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Wonders of Kerr-Schild geometry (Abraham Harte)
DTSTART;VALUE=DATE-TIME:20240320T133000Z
DTEND;VALUE=DATE-TIME:20240320T143000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2937@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Abraham Harte ()\nKerr-Schild geometry has recently
seen a surge of interest\, appearing in double-copy constructions\, in the
highly-regular gauge used in the second-order self-force\, and elsewhere.
This talk explores some of the remarkable properties of Kerr-Schild geome
try: It can be used to eliminate nonlinearities in Einstein's equation\, c
an improve accuracy in perturbation theory\, can be used to generate large
classes of new solutions to Maxwell's equations\, and also to generate ne
w solutions for high-frequency gravitational (and other) waves. These resu
lts provide a wealth of new tools which have just begun to be explored.\n\
nhttps://indico.ph.ed.ac.uk/event/278/contributions/2937/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2937/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Comparing numeric and analytic methods for black hole scattering i
n unequal mass systems (Oliver Long)
DTSTART;VALUE=DATE-TIME:20240320T110000Z
DTEND;VALUE=DATE-TIME:20240320T120000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2931@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Oliver Long (AEI)\nIn this talk\, we address the sig
nificance of studying hyperbolic orbits in gravitational physics by compar
ing different methods of calculating scattering observables. We begin by d
etailing a numerical calculation method for the scalar self-force correcti
on to the scattering angle and juxtapose these results with analytical exp
ressions derived from scattering-amplitude methods\, up to fourth post-Min
kowskian order. We then provide an overview of the current state of modell
ing scattering orbits within Numerical Relativity. Specifically\, we compa
re preliminary results of unequal mass hyperbolic binary black hole encoun
ters obtained through Numerical Relativity simulations with predictions fr
om post-Minkowskian and Effective One Body methods. Our findings shed ligh
t on the strengths and limitations of each method and pave the way for fur
ther advancements in understanding hyperbolic encounters in gravitational
systems.\n\nhttps://indico.ph.ed.ac.uk/event/278/contributions/2931/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2931/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gravitational two-body dynamics at NNNLO in post-Minkowskian appro
ximation (Zhengwen Liu)
DTSTART;VALUE=DATE-TIME:20240322T093000Z
DTEND;VALUE=DATE-TIME:20240322T103000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2936@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Zhengwen Liu ()\nHigh-accuracy theoretical predictio
ns for the motion of compact binary systems are crucial for maximizing the
discovery potential of current and future gravitational-wave observations
\, such as LIGO-Virgo-Kagra and LISA. The Effective Field Theory methodolo
gy\, combined with modern multi-loop techniques\, has proven to be excepti
onally powerful for analytically solving the gravitational two-body inspir
alling problem in post-Minkowskian approximation. This talk explore recent
advancements in the worldline EFT and its application in computing two-bo
dy inspiralling dynamics\, with a focus on the recently-obtained results a
t the fourth PM order (NNNLO).\n\nhttps://indico.ph.ed.ac.uk/event/278/con
tributions/2936/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2936/
END:VEVENT
BEGIN:VEVENT
SUMMARY:An Effective Field Theory for Extreme Mass Ratios (Clifford Cheung
)
DTSTART;VALUE=DATE-TIME:20240321T133000Z
DTEND;VALUE=DATE-TIME:20240321T143000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2934@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Clifford Cheung ()\nhttps://indico.ph.ed.ac.uk/event
/278/contributions/2934/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2934/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On-shell approaches to self-force using amplitudes on backgrounds
(Sonja Klisch)
DTSTART;VALUE=DATE-TIME:20240321T110000Z
DTEND;VALUE=DATE-TIME:20240321T120000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2933@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Sonja Klisch ()\nAt leading order\, the self-force e
xpansion describes the geodesic motion of a massive point particle on a no
n-trivial background. Consequently\, if we seek to calculate classical obs
ervables in this expansion using scattering amplitudes\, a natural startin
g point is from a QFT on this non-trivial background. Amplitudes here capt
ure the full non-linearities of the theory\, including effects such as mem
ory and gravitational tails. In this talk I will present some recent and u
pcoming work using this approach\, including the calculation of the wavefo
rm from massive scattering on a gravitational plane wave\, scattering ampl
itudes on Schwarzschild\, and amplitudes in Einstein-Maxwell on strong bac
kgrounds.\n\nhttps://indico.ph.ed.ac.uk/event/278/contributions/2933/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2933/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gravitational Self Force from Scattering Amplitudes in Curved Spac
e (Dimitrios Kosmopoulos)
DTSTART;VALUE=DATE-TIME:20240321T093000Z
DTEND;VALUE=DATE-TIME:20240321T103000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2932@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Dimitrios Kosmopoulos ()\nI will present a novel app
roach for calculating observables in the context of the binary inspiral pr
oblem which is designed to leverage the all-orders-in-G information carrie
d by exact solutions of the Einstein equations. This framework computes sc
attering amplitudes in the curved-space setup where a light particle of ma
ss m is treated as a probe in the geometry sourced by a heavy particle of
mass M. Observables are organized in the gravitational self-force expansio
n\, i.e. as an expansion in m/M. Backreaction of the background is capture
d via Goldstone bosons associated with the spontaneous breaking of spaceti
me symmetries. I will discuss advantages introduced by this formalism and
cross checks against the literature.\n\nhttps://indico.ph.ed.ac.uk/event/2
78/contributions/2932/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2932/
END:VEVENT
BEGIN:VEVENT
SUMMARY:State of the art in gravitational self-force (Barry Wardell)
DTSTART;VALUE=DATE-TIME:20240319T133000Z
DTEND;VALUE=DATE-TIME:20240319T143000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2928@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Barry Wardell ()\nhttps://indico.ph.ed.ac.uk/event/
278/contributions/2928/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2928/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Analytic self-force: Bound and Unbound -PN\, PM\, SF and just that
(Chris Kavanagh)
DTSTART;VALUE=DATE-TIME:20240319T110000Z
DTEND;VALUE=DATE-TIME:20240319T120000Z
DTSTAMP;VALUE=DATE-TIME:20240422T062905Z
UID:indico-contribution-278-2926@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Chris Kavanagh ()\nhttps://indico.ph.ed.ac.uk/event/
278/contributions/2926/
LOCATION:Higgs Centre Seminar Room 4305
URL:https://indico.ph.ed.ac.uk/event/278/contributions/2926/
END:VEVENT
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