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Event at Galileo Galilei Institute


Workshop

Gravitational scattering, inspiral, and radiation

Apr 19, 2021 - May 21, 2021



Abstract
The purpose of the workshop is to gather theorists working on apparently different areas which are nevertheless connected to the recent discovery of gravitational waves. More specifically its aims are to: (i) deepen links and foster new collaborations between the quantum gravitational scattering amplitude and the GR community, leading to the calculation of new, high-order, terms in the post-Newtonian and post-Minkowskian perturbative approaches to the physics of binary systems; (ii) identify new synergies between the GR analytical and numerical communities which have already proved to be so crucial in constructing the waveform templates necessary for the analysis of LIGO/Virgo data; (iii) use recent progress on gravitational scattering and radiation in ultra-relativistic collisions of elementary particles or strings to improve the determination of parameters appearing in the effective-one-body approach to the relativistic two-body problem. This includes profiting from a newly-discovered on-shell construction of gravitational amplitudes from gauge-theory amplitudes; (iv) connect properties of the gravitational wave spectrum at low frequencies to recent developments in soft-graviton theorems at sub- and sub-sub-leading level, including predictions for gravitational memory, BMS asymptotic symmetries, and logarithmic enhancements; (v) explore various consequences of modified gravity theories for the LIGO/Virgo discoveries.

Topics
Analytic and numerical methods for the general relativistic two-body problem High energy gravitational scattering and radiation
New approaches to gravitational amplitudes
Soft theorems and their use for computing GW signals
Alternative theories of gravity

NOTE ON THE WORKSHOP: We inform all applicants that the workshop will be held remotely. Detailed instructions about the remote connection will be sent to the registered participants.

Organizers
Dimitri Colferai (University of Florence), Claudia de Rham (Imperial College London), Alessandro Nagar (INFN, Turin), Donal O’Connell (University of Edinburgh), Pierre Vanhove (CEA, Saclay), Gabriele Veneziano (CERN), Alexander Zhiboedov (CERN)

Local organizer
Dimitri Colferai, Matteo Maria Maglio, Alessio Caddeo

Contact
colferai@fi.infn.it

Related events
Gravitational scattering, inspiral, and radiation (Training Week) - Apr 19, 2021

Gravitational scattering, inspiral, and radiation
(Conference) - Apr 26, 2021





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Talks
Date Speaker Title Type Useful Links
May 04, 2021 - 15:00-16:00 Prahar Mitra Introduction to BMS Seminar Video
May 04, 2021 - 16:30-17:30 Biswajit Sahoo A systematic approach to understand all order soft theorems and tail memories Seminar Slides Video
May 05, 2021 - 14:30-15:30 Geoffrey Compere Angular momentum in GR: the role of generalized BMS symmetry Seminar Slides Video
May 05, 2021 - 16:00-17:00 Miguel Campiglia BMS symmetry at time-infinity Seminar Video
May 06, 2021 - 15:00-16:00 Keefe Mitman Gravitational Memory in Numerical Relativity: Computing Memory Effects, Correcting Waveforms, and the importance of BMS Frames Seminar Slides Video
May 06, 2021 - 16:30-17:30 Discussion animated by Thibault Damour, Ashoke Sen, Andy Strominger Discussion Video
May 07, 2021 - 15:00-16:00 Maurizio Firrotta String interactions and memory effects Seminar Slides Video
May 10, 2021 - 16:30-17:30 Agustin Sabio Vera The perturbative Regge limit Seminar Slides Video
May 10, 2021 - 17:30-18:30 Discussion Discussion
May 11, 2021 - 15:00-16:00 Radu Roiban Particle physics methods for higher orders in the PN and PM expansion Seminar Video
May 11, 2021 - 16:00-17:00 Andreas Maier The gravitational potential at fifth post-Newtonian order Seminar Slides Video
May 11, 2021 - 17:00-18:00 Donato Bini Hyperboliclike encounters in a two-body system: Analytical treatment, recent developments and open problems Seminar Slides Video
May 12, 2021 - 15:00-16:00 Mao Zeng Integrals for conservative and radiative binary dynamics Seminar Slides Video
May 12, 2021 - 16:00-17:00 Carlo Heissenberg Loop integrals in the soft region and the gravity eikonal Seminar Slides Video
May 13, 2021 - 15:00-16:00 Uli Sperhake Grazing collisions and eccentric inspirals of black holes Seminar Slides
May 13, 2021 - 16:00-17:00 Hannes Reuter Hyperbolic-like Encounters of Binary Black Holes with the numerical relativity code SpEC Seminar Slides
May 13, 2021 - 17:00-18:00 Seth Hopper Hyperbolic encounters between spinning binary black holes Seminar Video
May 14, 2021 - 15:00-16:00 Mariana Carrillo Gonzalez Conservative Potential from Scattering Amplitudes for Binary Systems with Conformal Coupling to Galileons Seminar Slides Video
May 14, 2021 - 16:00-17:00 Rafael Aoude Scattering amplitudes for Heavy Particle Effective Theories Seminar Video
May 17, 2021 - 15:00-16:00 Riccardo Gonzo Waveforms from the KMOC formalism and coherent states Seminar Slides Video
May 17, 2021 - 16:00-17:00 Massimiliano Riva Gravitational Bremsstrahlung in the Post-Minkowskian Effective Field Theory Seminar Slides Video
May 17, 2021 - 17:00-18:00 Paolo Di Vecchia (Nordita and Niels Bohr Institute) Wave-form from unitarity Seminar Slides Video
May 18, 2021 - 15:00-16:00 Ludovic Planté Classical Gravity from Loop Amplitudes Seminar Slides Video
May 18, 2021 - 16:00-17:00 Gustav Mogull Gravitational Bremsstrahlung from Spinning Bodies using a Worldline QFT Seminar Video
May 18, 2021 - 17:00-17:30 Enrico Herrmann Collider physics tools for dissipative effects in binary dynamics (part I) Seminar Slides Video
May 18, 2021 - 17:30-18:00 Michael Ruf Collider physics tools for dissipative effects in binary dynamics (part II) Seminar Video
May 19, 2021 - 15:00-16:00 Gregor Kälin Post-Minkowskian Framework and the Boundary-To-Bound Dictionary for Gravitational Dynamics Seminar Slides Video
May 19, 2021 - 16:00-16:30 Chia-Hsien Shen Amplitudes, Effective field theory, and Conservative Two-body Dynamics Seminar Video
May 19, 2021 - 16:30-17:00 Discussion on bound vs unbound problem Discussion
May 20, 2021 - 15:00-16:00 Alexander Ochirov Classical scattering of spinning black holes from quantum amplitudes Seminar Slides Video
May 20, 2021 - 16:00-17:00 Chia Horng Sheng Tidal Deformation and Dissipation of Rotating Black Hole Seminar Slides Video
May 21, 2021 - 15:00-15:45 Nava Gaddam Gravitational scattering at impact parameters L_P << b << R_S and the black hole S-matrix Seminar Slides Video
May 21, 2021 - 15:45-16:30 Justinas Rumbutis Double Copy Relations in Massive Theories Seminar Slides Video
May 21, 2021 - 16:30-18:00 Inspiralling discussions around the Two-Body Problem Discussion