String Theory Seminar: Sam Leutheusser (IAS) ” Superadditivity in large N field theories and performance of quantum tasks”
Abstract: Holographic conformal field theories exhibit dramatic changes in the structure of their operator algebras in the limit where the number of local degrees of freedom (N) becomes infinite. An important example of such phenomena is the violation of the additivity property for algebras associated to local subregions. I will first review several examples of superadditive algebras in quantum field theory and … Read More
Julian Sonner (University of Geneva) “tba”
String Theory Seminar: Eric Perlmutter (IPhT, Saclay) “An L-function Approach to 2D CFT”
Abstract: We construct L-functions for general modular-invariant 2D CFTs, providing an analytic language for studying high-energy spectra and their resolution. We apply this tool to the modular bootstrap at large central charge. This leads to some considerations of chaos and spectral rigidity in 2D CFT.
String Theory Seminar: Chris Akers (CU Boulder) “On the reconstruction map in JT gravity”
Abs: A key question in holography is how to reconstruct bulk operators in the holographic dual. It is especially interesting to reconstruct operators inside the black hole interior, but also especially difficult to do explicitly. Recently, an explicit form for the bulk-to-boundary `holographic’ map was proposed in JT gravity, by Iliesiu, Levine, Lin, Maxfield, and Mezei, who also proposed and … Read More
String Theory Seminar: Kyle Ritchie (UCB) ““Generalized Entanglement Wedges from the Gravitational Path Integral””
“Using the gravitational path integral, we argue for the Bousso-Penington for generalized entanglement wedges. To do this, we exploit the connection between random tensor networks and fixed induced-metric states in gravity. Specifically, we provide a prescription for computing entropies of bulk regions in random tensor networks, and then use the replica trick to derive the Bousso-Penington proposal for fixed induced … Read More