BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Severin Bunk (University of Oxford) DTSTART:20231107T190000Z DTEND:20231107T205000Z DTSTAMP:20260422T174230Z UID:tandg/11 DESCRIPTION:Title: S mooth higher symmetries groups and the geometry of Deligne cohomology\ nby Severin Bunk (University of Oxford) as part of Topology and Geometry S eminar (Texas\, Kansas)\n\n\nAbstract\nWe construct the smooth higher grou p of symmetries of any higher geometric structure on manifolds. Via a univ ersal property\, this classifies equivariant structures on the geometry. W e present a general construction of moduli stacks of solutions in higher-g eometric field theories and provide a criterion for when two such moduli s tacks are equivalent. We then apply this to the study of generalised Ricci solitons\, or NSNS supergravity: this theory has two different formulatio ns\, originating in higher geometry and generalised geometry\, respectivel y. These formulations produce inequivalent field configurations and inequi valent symmetries. We resolve this discrepancy by showing that their modul i stacks are equivalent. This is joint work with C. Shahbazi.\n LOCATION:https://researchseminars.org/talk/tandg/11/ END:VEVENT END:VCALENDAR