Seminar is Cancelled: Generalized entropy in topological string theory

Seminar is Cancelled: Gabriel Wong (Harvard CMSA)

01-Dec-2022, 19:00-20:00 (16 months ago)

Abstract: Seminar is Cancelled: The holographic entanglement entropy formula identifies the generalized entropy of the bulk AdS spacetime with the entanglement entropy of the boundary CFT. However the bulk microstate interpretation of the generalized entropy remains poorly understood. Progress along this direction requires a definition of Hilbert space factorization and entanglement entropy in the bulk closed string theory. As a toy model for AdS/CFT, we study the entanglement entropy of closed strings in the topological A model, which enjoys a gauge-string duality. We define a notion of generalized entropy for closed strings on the resolved conifold using the replica trick. As in AdS/CFT, we find this is dual to (defect) entanglement entropy in the dual Chern Simons gauge theory. Our main result is a bulk microstate interpretation of the generalized entropy for closed strings as the entanglement entropy of open strings ending on ``entanglement branes" . These branes are interpreted as entanglement edge modes, which transform under a quantum group symmetry. We relate these entanglement branes to the D branes of the A model topological string.

HEP - phenomenologyHEP - theorymathematical physics

Audience: researchers in the topic


NHETC Seminar

Series comments: Description: Weekly research seminar of the NHETC at Rutgers University

Livestream link is available on the webpage.

Organizers: Christina Pettola*, Sung Hak Lim, Vivek Saxena*, Erica DiPaola*
*contact for this listing

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