др Михаило Чубровић

21. фебруара 2024.

У оквиру семинара Групе за гравитацију, честице и поља Института за физику у Београду, у петак, 23. фебруара 2024. године у 11 часова, у сали 360 Института за физику у Београду, др Михаило Чубровић (Институт за физику у Београду) одржаће предавање:

Chaos and factorization beyond classical horizons


Chaotic dynamics of black holes has proven to be of vital importance for the understanding of the black hole information problem. Within the replica formalism, a related issue is that of nonfactorization of partition functions of wormhole geometries. We consider these questions deep in the stringy regime, described by the BFSS and IKKT matrix models, where the notions of geometry and horizon do not apply anymore. Generic solutions factorize when averaged over the quantum fluctuations, whereas the chaotic properties are non-universal. We argue that the correct notion that characterizes the black hole scrambling is instead that of quantum magic (stabilizer Renyi entropy), which guarantees that the dynamics is complex enough to accommodate the total information on infalling matter.