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BIMSA General Relativity Seminar
Matching conditions between past infinity and future infinity
Matching conditions between past infinity and future infinity
Organizers
Speaker
Marc Henneaux
Time
Friday, May 23, 2025 4:00 PM - 5:00 PM
Venue
A3-2-301
Online
Zoom 787 662 9899
(BIMSA)
Abstract
Matching conditions relating the fields at the future of past null infinity with the fields at the past of future null infinity play a central role in the analysis of asymptotic symmetries and conservation laws in asymptotically flat spacetimes. We will explain how these matching conditions can be derived from initial data given on a Cauchy hypersurface by integrating forward and backward in time the field equations to leading order in an asymptotic expansion, all the way to future and past null infinities. The analysis can be performed even if logarithmic terms develop at null infinity.
Speaker Intro
Marc Henneaux studied physics at the University of Brussels in Belgium and received his doctoral degree in 1980 under the supervision of J. Géhéniau. He was a Visiting Fellow at the University of Princeton for the academic year 1978-1979 and was postdoctoral research associate and lecturer at the University of Texas from 1981 to 1984. From there, he held a research position at the Belgian Science foundation (FNRS) until 1992, after which he was appointed Associate Professor at the University of Brussels (1993-1996). He is Full Professor at the University of Brussels since October 1996 and an Associate Member of CECs (Chile) since 1985. Since January 1, 2004, he is also Director of the International Solvay Institutes for Physics and Chemistry, founded by E. Solvay. In 2017, Marc Henneaux was appointed Professor at the Collège de France where he holds the Chair "Champs, Cordes et Gravité".