BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Georgios Moschidis (University of California Berkeley) DTSTART:20200630T101500Z DTEND:20200630T111500Z DTSTAMP:20260513T204644Z UID:CCTP_HEP/8 DESCRIPTION:Title: The instability of Anti-de Sitter spacetime\nby Georgios Moschidis (U niversity of California Berkeley) as part of CCTP HEP Seminars\n\n\nAbstra ct\nAccording to the AdS instability conjecture\, there exist arbitrarily small perturbations to the initial data of AdS spacetime which\, under evo lution by the vacuum Einstein equations with reflecting boundary condition s on conformal infinity\, lead to the formation of black holes after suffi ciently long time. To this day\, the question about the vacuum equations r emains open (and poorly understood). However\, during the last decade\, a large number of numerical and heuristic works have been dedicated to addre ssing the conjecture in the presence of matter fields allowing spherically symmetric dynamics. In this talk\, I will review the progress achieved so far in addressing the AdS instability conjecture and I will present a rig orous proof of the instability in the setting of the spherically symmetric Einstein--scalar field system. The proof will be based on the non-linear interactions of special configurations of matter beams. The possible exten sion of the main ideas to the vacuum case will also be discussed.\n LOCATION:https://researchseminars.org/talk/CCTP_HEP/8/ END:VEVENT END:VCALENDAR