BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:Asymptotics in General Relativity: the role of spatial infinity DTSTART:20260205T143000Z DTEND:20260205T160000Z DTSTAMP:20260804T011521Z UID:6c51f22c-1265-456d-bd78-1e5977648cc1 SEQUENCE:2 CREATED:20260126T154201Z DESCRIPTION:In this overview talk I will discuss the relation between the asymptotic behaviour of the gravitational field at null infinity and spati al infinity\, the so-called problem of spatial infinity. I will argue that the conditions assumed by Penrose in his programme to study isolated syst ems in General Relativity are too restrictive to describe generic spacetim es.I will also discuss how a conformal approach to the study of the struct ure of spatial infinity offers the tantalising possibility of settling dow n the problem of spatial infinity\, thus providing us with a full understa nding of the way that Cauchy data determines the asymptotic behaviour of t he gravitational field. I will present some applications of these ideas to the computation of asymptotic charges. LAST-MODIFIED:20260126T154209Z LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/asymptotics-in-general-rel ativity-the-role-of-spatial-infinity/ X-ALT-DESC;FMTTYPE=text/html:

In this overview ta lk I will discuss the relation between the asymptotic behaviour of the gra vitational field at null infinity and spatial infinity\, the so-called pro blem of spatial infinity. I will argue that the conditions assumed by Penr ose in his programme to study isolated systems in General Relativity are t oo restrictive to describe generic spacetimes.

I will also discus s how a conformal approach to the study of the structure of spatial infini ty offers the tantalising possibility of settling down the problem of spat ial infinity\, thus providing us with a full understanding of the way that Cauchy data determines the asymptotic behaviour of the gravitational fiel d. I will present some applications of these ideas to the computation of a symptotic charges.

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