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SUMMARY:From scattering amplitudes to Newton’s potential and beyond
DTSTART;VALUE=DATE-TIME:20211001T090000Z
DTEND;VALUE=DATE-TIME:20211001T100000Z
DTSTAMP;VALUE=DATE-TIME:20211016T052600Z
UID:indico-event-6899@indico.ph.tum.de
DESCRIPTION:Speakers: Gabriele Travaglini (Queen Mary University of London
)\n\n\nAbstract:\n\nI will review the computation of the gravitational pot
ential from scattering amplitudes and unitarity. I will also explain how t
o compute directly observable quantities such as the scattering angle for
light or for gravitons passing by a heavy mass (such as a black hole). Aft
er this introduction\, I will show how to extend our considerations to inc
orporate higher-derivative corrections to the Einstein-Hilbert theory\, in
the framework of effective field theories. In the second part I will disc
uss the prospects of performing computations in Einstein gravity to higher
loops using a new\, gauge-invariant version of the colour-kinematics BCJ
duality formulated directly in a heavy-mass effective theory. As an exampl
e I will review the computation of the scattering angle for classical blac
k hole scattering at 3PM (two loops). \n\n\nhttps://indico.ph.tum.de/even
t/6899/
LOCATION:Zoom
URL:https://indico.ph.tum.de/event/6899/
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