BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Zong-Zhe Du (University of Notthingham) DTSTART:20260529T070000Z DTEND:20260529T080000Z DTSTAMP:20260602T191009Z UID:EUPAC-TP/32 DESCRIPTION:Title: Energy Conservation and Holographic anomaly in de Sitter quantum gravity \nby Zong-Zhe Du (University of Notthingham) as part of Europe and Pac ific Theoretical Physics\n\n\nAbstract\nIn the first part of talk\, I will introduce a new quantum gravity observable\, the de Sitter scattering amp litude defined in global de Sitter spacetime\, which is non-perturbatively field basis independent and gauge invariant\, a property that the convent ional (A)dS/CFT observable fails to preserve. In de Sitter space\, due to lack of time translation invariance\, the scattering amplitude in general does not conserve energy. Remarkably\, by imposing a notion of generalised energy conservation (GEC)\, we are able to uniquely pin down Dirac-Born-I nfeld\, Special Galileon and find evidence for new theories with higher ma ss spectrum. I also argue GEC serves as a stability condition for de Sitte r vacua in quantum gravity.\n\nIn the second part of the talk\, I will dem onstrate that the non-energy conserving scattering amplitude precisely cor responds to the conformal anomaly of the boundary dual field theory. The G EC condition can therefore be translated into quantum conformal invariance of the boundary field theory. Consequently\, by studying the boundary loc ality structure of the conformal anomaly\, we find that holographic consis tency lies in a strict measure-zero subset of GEC landscape.\n LOCATION:https://researchseminars.org/talk/EUPAC-TP/32/ END:VEVENT END:VCALENDAR