Abstract

Neural quantum states have emerged as a novel promising numerical method to solve the quantum many-body problem both in and out of equilibrium. In this talk I will highlight the recent progress in particular concerning correlated quantum matter in two spatial dimensions both for the equilibrium ground-state as well non-equilibrium real-time dynamics problem. For the calculations of ground states I will introduce the minimum-step stochastic reconfiguration method that reduces the optimization complexity by orders of magnitude. I will show that with this method we can now accurately train on unprecedentedly deep neural quantum states with millions of parameters allowing us to obtain the lowest variational energies as compared to existing numerical results for frustrated quantum magnets. Further, I will highlight the recent results on solving the real-time dynamics of correlated quantum matter using neural quantum states, which has allowed us to verify for instance for the first time the quantum Kibble-Zurek mechanism for interacting quantum many-body systems in two spatial dimensions.

The News & Views Seminars are meant to address our section as a whole, and therefore include an extensive pedagogical introduction to the topic, and present the main physical ideas of the research in a way understandable by everybody in the section. The goal is to bridge distances among different subgroups of our diverse CMSP section. The diversity in our section makes it a unique place for crossing bridges among different topics, and for cross-fertilization among seemingly distant fields.

Coffee break will be served before the Seminar at 10:30 in the Leonardo Building terrace.