BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Seminar is Cancelled: Gabriel Wong (Harvard CMSA) DTSTART:20221201T190000Z DTEND:20221201T200000Z DTSTAMP:20260423T005659Z UID:nhetc/58 DESCRIPTION:Title: S eminar is Cancelled: Generalized entropy in topological string theory \nby Seminar is Cancelled: Gabriel Wong (Harvard CMSA) as part of NHETC S eminar\n\n\nAbstract\nSeminar is Cancelled: The holographic entanglement entropy formula identifies the generalized entropy of the bulk AdS spaceti me with the entanglement entropy of the boundary CFT. However the bulk mic rostate interpretation of the generalized entropy remains poorly understoo d. Progress along this direction requires a definition of Hilbert space fa ctorization and entanglement entropy in the bulk closed string theory. A s a toy model for AdS/CFT\, we study the entanglement entropy of closed st rings in the topological A model\, which enjoys a gauge-string duality. We define a notion of generalized entropy for closed strings on the resolv ed conifold using the replica trick. As in AdS/CFT\, we find this is dua l to (defect) entanglement entropy in the dual Chern Simons gauge theory. Our main result is a bulk microstate interpretation of the generalized e ntropy for closed strings as the entanglement entropy of open strings endi ng on ``entanglement branes" . These branes are interpreted as entangl ement edge modes\, which transform under a quantum group symmetry. We rel ate these entanglement branes to the D branes of the A model topological s tring.\n LOCATION:https://researchseminars.org/talk/nhetc/58/ END:VEVENT END:VCALENDAR