Auxiliary field diffusion Monte Carlo calculations of light and medium-mass nuclei with local chiral interactions

D. Lonardoni, S. Gandolfi, J. E. Lynn, C. Petrie, J. Carlson, Kevin Schmidt, A. Schwenk

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Abstract

Quantum Monte Carlo methods have recently been employed to study properties of nuclei and infinite matter using local chiral effective-field-theory interactions. In this work, we present a detailed description of the auxiliary field diffusion Monte Carlo algorithm for nuclei in combination with local chiral two- and three-nucleon interactions up to next-to-next-to-leading order. We show results for the binding energy, charge radius, charge form factor, and Coulomb sum rule in nuclei with 3≤A≤16. Particular attention is devoted to the effect of different operator structures in the three-body force for different cutoffs. The outcomes suggest that local chiral interactions fit to few-body observables give a very good description of the ground-state properties of nuclei up to O16, with the exception of one fit for the softer cutoff which predicts overbinding in larger nuclei.

Original languageEnglish (US)
Article number044318
JournalPhysical Review C
Volume97
Issue number4
DOIs
StatePublished - Apr 24 2018

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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