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TZID:Europe/Berlin
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UID:2488@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20260203T110000
DTEND;TZID=Europe/Berlin:20260203T120000
DTSTAMP:20260202T104712Z
URL:https://qft.physik.hu-berlin.de/next-seminars/francesco-alessio/
SUMMARY:Francesco Alessio - 
DESCRIPTION:Title: From soft to high-energy logarithms in classical gravita
 tional scattering\n\nAbstract: Since the discovery of gravitational waves 
 from coalescing black holes\, it has become crucial to better understand g
 ravitational two-body dynamics and associated gravitational radiation. In 
 this talk I will show how\, in the post-Minkowskian (PM) regime\, scatteri
 ng amplitudes offer a convenient way of organising gravitational-wave obse
 rvables in terms of gauge-invariant data. Further\, I will combine this wi
 th two complementary approaches given by the classical soft theorems\, whi
 ch dictate the low-frequency behaviour of the radiative dynamics and by th
 e Regge theory governing the high-energy regime. In particular\, I will di
 scuss recent progress in the calculation of the soft scattering waveform a
 nd the associated spectrum of emitted energy and that of the high-energy l
 ogarithms appearing in the 5PM amplitude.
CATEGORIES:ERC Group Seminar
LOCATION:Room 1.221\, IRIS building\, Zum großen Windkanal 6\, Berlin\, 12
 489\, Germany
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Zum großen Windkanal 6\, B
 erlin\, 12489\, Germany;X-APPLE-RADIUS=100;X-TITLE=Room 1.221\, IRIS build
 ing:geo:0,0
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TZID:Europe/Berlin
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DTSTART:20251026T020000
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