Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloNonlinear Network Description for Many-Body Quantum Systems in Continuous Space
Anno di pubblicazione2018
Formato
  • Elettronico
  • Cartaceo
Autore/iRuggeri M., Moroni S., Holzmann M.
Affiliazioni autoriMax Planck Institute for Solid State Research, Heisenbergstr. 1, Stuttgart, 70569, Germany; DEMOCRITOS National Simulation Center, Istituto Officina Dei Materiali Del CNR, SISSA, Via Bonomea 265, Trieste, I-34136, Italy; Univ. Grenoble Alpes, CNRS, LPMMC, Grenoble, 3800, France; Institut Laue Langevin, BP 156, Grenoble Cedex 9, F-38042, France
Autori CNR e affiliazioni
  • SAVERIO MORONI
Lingua/e
  • inglese
AbstractWe show that the recently introduced iterative backflow wave function can be interpreted as a general neural network in continuum space with nonlinear functions in the hidden units. Using this wave function in variational Monte Carlo simulations of liquid He4 in two and three dimensions, we typically find a tenfold increase in accuracy over currently used wave functions. Furthermore, subsequent stages of the iteration procedure define a set of increasingly good wave functions, each with its own variational energy and variance of the local energy: extrapolation to zero variance gives energies in close agreement with the exact values. For two dimensional He4, we also show that the iterative backflow wave function can describe both the liquid and the solid phase with the same functional form - a feature shared with the shadow wave function, but now joined by much higher accuracy. We also achieve significant progress for liquid He3 in three dimensions, improving previous variational and fixed-node energies. © 2018 American Physical Society.
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RivistaPhysical review letters (Print)
Attiva dal 1958
Editore: American Physical Society. - [Woodbury, N.Y., etc.]
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 0031-9007
Titolo chiave: Physical review letters (Print)
Titolo proprio: Physical review letters. (Print)
Titolo abbreviato: Phys. rev. lett. (Print)
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DOI10.1103/PhysRevLett.120.205302
Verificato da referee-
Stato della pubblicazionePublished version
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Link (URL, URI)https://www.scopus.com/record/display.uri?eid=2-s2.0-85047394085&doi=10.1103%2fPhysRevLett.120.205302&origin=inward&txGid=85b7b313919e3348afa5119649584c92#
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  • IOM — Istituto officina dei materiali
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Nonlinear Network Description for Many-Body Quantum Systems in Continuous Space (documento privato )
Tipo documento: application/pdf