Fermionic wave functions from neural-network constrained hidden states.

ABSTRACT: We introduce a systematically improvable family of variational wave functions for the simulation of strongly correlated fermionic systems. This family consists of Slater determinants in an augmented Hilbert space involving "hidden" additional fermionic degrees of freedom. These determinants are projected onto the physical Hilbert space through a constraint that is optimized, together with the single-particle orbitals, using a neural network parameterization. This construction draws inspiration from the success of hidden-particle representations but overcomes the limitations associated with the mean-field treatment of the constraint often used in this context. Our construction provides an extremely expressive family of wave functions, which is proved to be universal. We apply this construct

SUBMITTER: Robledo Moreno J 

PROVIDER: S-EPMC9371695 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature