2021

We are thrilled that the final pieces of the upgrade for our PARADOX cluster have been put into production. Our computational resources are now nearing 1500 CPUs.

Today Jakša Vučičević participated in an online workshop, organized by the Simons foundation funded Collaboraton on the Many Electron Problem.
The topic of the meeting was diagrammatic Monte Carlo, and Jakša presented his most recent work, done in collaboration with P. Stipsić and M. Ferrero (see also this) in a 30 minute talk, followed by a discussion. Other speakers in the Friday session were James Leblanc, Nikolay Prokof’ev and Olivier Parcollet, and among other speakers who presenting on Monday and Tuesday were also Kristjan Haule, Boris Svistunov and Evgeny Kozik. The event attracted more than 50 participants.

We are happy to anounce that the most recent work by Mihailo Čubrović,”Wormholes and out-of-time ordered correlators in gauge/gravity
duality”,is now available on arXiv.  This paper will help us to bridge the gap between the study of holographic non-Fermi liquids at equilibrium, which is the main line of our project, and their dynamical properties, i.e., quantum chaos and the response to perturbations. The latter is encapsulated in Loschmidt-echo-type physics, and can be a sensitive tool to test how close our holographic model is to the strange metal phenomenology including strong quantum chaos and universal, Planck-scale dominated hydrodynamic response.

It is the end of the second quarter of our project implementation. In the last three months our computational cluster got updated, and we are well on our way developing a new set of codes. Mihailo Čubrović is already optimizing AdS model parameters to improve agreement with the Hubbard model, and Veljko is fully up to speed, and already made great progress with a new method for calculating density and density correlations in the Hubbard model.