GQFI-UGent-WST Seminar: Felix Haehl "Spin glasses and holography"
The connections between disordered quantum systems (specifically the SYK model), ensemble averaging, and two-dimensional dilaton gravity underlie much of the recent progress on holography and quantum gravity. While the SYK model is a 'spin liquid' even at low temperatures, closely related disordered systems exhibit a 'spin glass' phase, characterized by ergodicity breaking and slow dynamics. In this talk, Felix Haehl (IAS) discusses simple spin glass models and some of their properties that are of interest from a gravitational point of view (such as thermodynamics and quantum chaos). Felix proposes a holographic interpretation of some crucial features that relates to the fragmentation instability of AdS2 towards a geometry with multiple throats. Based on work with Tarek Anous, Maine Christos, and Subir Sachdev.
The Virtual Seminar Series “GQFI-Ghent University-Warsaw String Theory” (GQFI-UGent-WST) is a joint initiative between the strings/holography groups at the Albert Einstein Institute (AEI) in Potsdam, Ghent University and the University Warsaw. The calendar for upcoming GQFI-UGent-WST seminars can be found here: https://gqfi.aei.mpg.de/node/3.
This talk is primarily based on arXiv:2106.03838 [hep-th] (https://arxiv.org/abs/2106.03838) and arXiv:2110.00007 [cond-mat.str-el] (https://arxiv.org/abs/2110.00007).
This talk was recorded on November 16th, 2021 at the Albert Einstein Institute in Potsdam-Golm.