Date : May 25, 2021, 16:00 CEST Alex Buchel (Perimeter Institute) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: Stabilization of the extended horizons Abstract:  N/A

Date : May 18, 2021, 16:00 CEST Charlotte Sleight (IAS) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: A Mellin-Barnes Approach to Scattering in de Sitter Space Abstract:  The last decade has seen significant progress in our understanding of scattering in anti-de Sitter (AdS) space. Through the AdS/CFT correspondence, we can reformulate scattering processes in AdS in terms of correlation functions in […]

Date : May 11, 2021, 16:00 CEST Amos Yarom (Technion) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: Stochastic gravity and turbulence Abstract:  I will discuss how to generate steady state turbulence by placing a theory on a manifold with a random metric. From a holographic perspective this corresponds to a stochastic theory of gravity.

Date : May 4, 2021, 16:00 CEST Matti Jarvinen (Asia Pacific Center for Theoretical Physics) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: Applying gauge/gravity duality to neutron stars Abstract:  Gauge/gravity duality can be used to study QCD at high densities and low temperatures where many other theoretical tools do not work and uncertainties are therefore large. I will review recent progress […]

Date : April 27, 2021, 16:00 CEST Mike Blake (University of Bristol) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: On systems of maximal quantum chaos Abstract:  A remarkable feature of chaos in many-body quantum systems is the existence of a bound on the quantum Lyapunov exponent. An important question is to understand what is special about maximally chaotic systems which saturate […]

Date : April 20, 2021, 16:00 CEST Sašo Grozdanov (MIT & U. Ljubljana) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: Bounds on transport from univalence Abstract:  Bounds on transport represent a way of understanding allowable regimes of quantum and classical dynamics. Numerous such bounds have been proposed, either for classes of theories or (by using general arguments) universally for all theories. […]

Date : April 13, 2021, 16:00 CEST Mukund Rangamani (UC Davis) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: An effective field theory of stochastic diffusion from gravity Abstract:  Planar black holes in AdS have long-lived quasinormal modes which capture the physics of charge and momentum diffusion in the dual field theory. We would like to understand the effective description of this […]

Date : March 9, 2021, 16:00 CET Julian Sonner (University of Geneva) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: Causal symmetry breaking: from quantum chaos to wormholes Abstract:  Quantum chaotic systems are often defined via the assertion that their spectral statistics coincides with, or is well approximated by random matrix theory. In this talk I will explain how the universal content […]

Date : March 16, 2021, 15:00 CET David Mateos (ICREA & U Barcelona) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: Bubble Dynamics from Holography Abstract:   Cosmological phase transitions proceed via the nucleation of bubbles that subsequently expand and collide. The resulting gravitational waves depend crucially on the bubble wall velocity. Microscopic calculations of this velocity are challenging even in weakly coupled […]

Date : February 23, 2021, 15:00 CET Sean Hartnoll (Stanford) Link: https://zoom.us/j/98810153463?pwd=WWtWQXBURGw1NTZ2Rm82QThPbW42dz09 Title: Planckian transport Abstract:   What does everyday copper, high temperature superconductors, magic angle graphene, doped silicon semiconductors, and the quark gluon plasma have in common? All of them, in some regime, are controlled by a `Planckian’ transport timescale made up from fundamental constants and the […]