BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Siddharth Prabhu (ICTS Bengaluru) DTSTART:20211001T093000Z DTEND:20211001T110000Z DTSTAMP:20260423T022921Z UID:lethep/9 DESCRIPTION:Title: T he holographic nature of quantum information storage in asymptotically fla t spacetimes\nby Siddharth Prabhu (ICTS Bengaluru) as part of LETHEP s eminars\n\n\nAbstract\nKnowledge of all observables on a Cauchy surface en ables us to determine these observables everywhere else in the spacetime. Thus any Cauchy surface can be deemed to be containing all information. He re\, we argue that asymptotically flat spacetimes possess a holographic na ture\, so that all this information is stored just on the boundary of a Ca uchy surface. Allowing for a few reasonable assumptions about the low ener gy structure of any complete theory of quantum gravity enables us to find that an asymptotic observer who resides at the past boundary of future nul l infinity has access to all the information about massless excitations. W e also show that information available in any cut of future null infinity is also available in any later cut\, but the converse doesn't hold. Simila r results hold for past null infinity. We will comment on several interest ing and exciting questions that this line of investigation sheds light on\ , including work in progress.\n LOCATION:https://researchseminars.org/talk/lethep/9/ END:VEVENT END:VCALENDAR