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Artificial neural network quantum states for atomic nuclei

ORAL

Abstract

Due to the exponential complexity of the many-body problem, solving the nuclear Schrödinger equation beyond light nuclei necessarily involves approximations. In this talk, we present a novel variational Monte Carlo method based on Artificial Neural Network representations of the ground-state wave functions that reach state-of-the-art precisions on light systems and favorably scale with the number of nucleons. We successfully benchmark nuclear binding energies, point-nucleon densities, and radii with the highly-accurate Green's function Monte Carlo and hyperspherical harmonics methods. The extensions of our approach to larger nuclei, including 16O, and periodic systems, will also be discussed.

Publication: A. Gnech, N. Brawand, G. Carleo, A. Lovato, N. Rocco, Few Body Syst. 63 (2022) 1, 7<br>C. Adams, G. Carleo, A. Lovato, N. Rocco, Phys. Rev. Lett. 127 (2021) 2, 022502

Presenters

  • Alessandro Lovato

    Argonne National Laboratory

Authors

  • Alessandro Lovato

    Argonne National Laboratory

  • Corey Adams

    Argonne National Laboratory

  • Noemi Rocco

    FNAL

  • Alex Gnech

    Jefferson Lab/Jefferson Science Associat

  • Giuseppe Carleo

    Ecole Polytechnique Federale de Lausanne

  • Nicholas Brawand

    Argonne National Laboratory