Simulating non-equilibrium quantum matter with neural quantum states

ORAL · Invited

Abstract

The numerical simulation of many-body quantum dynamics constitutes a pivotal challenge of computational physics due to the typical growth of entanglement in the course of the evolution. I will discuss how combining the time-dependent variational principle with artificial neural networks as ansatz for the variational wave function allows us to overcome some of the current limitations. As an application I will address quantum phase transition dynamics in two spatial dimensions of a model that is experimentally realized in Rydberg quantum simulators.

Publication: M. Schmitt and M. Heyl, "Quantum many-body dynamics in two dimensions with artificial neural networks", Phys. Rev. Lett. 125, 100503 (2020)
M. Reh, M. Schmitt, M. Gärttner, "Time-dependent variational principle for open quantum systems with artificial neural networks", Phys. Rev. Lett. 127, 230501 (2021)
M. Schmitt, M. M. Rams, J. Dziarmaga, M. Heyl, W. H. Zurek, "Quantum phase transition dynamics in the two-dimensional transverse-field Ising model", Sci. Adv. 8, abl6850 (2022)

Presenters

  • Markus Schmitt

    FZ Jülich

Authors

  • Markus Schmitt

    FZ Jülich