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Quantum Monte Carlo calculations of light nuclei with local chiral two- and three-nucleon interactions

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arxiv 1706.07668 v2 pith:X4BNJT5Q submitted 2017-06-23 nucl-th nucl-ex

Quantum Monte Carlo calculations of light nuclei with local chiral two- and three-nucleon interactions

J. E. Lynn , I. Tews , J. Carlson , S. Gandolfi , A. Gezerlis , K. E. Schmidt , A. Schwenk This is my paper
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keywords interactionscarlochirallocalmontelightnuclearnuclei
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Local chiral effective field theory interactions have recently been developed and used in the context of quantum Monte Carlo few- and many-body methods for nuclear physics. In this work, we go over detailed features of local chiral nucleon-nucleon interactions and examine their effect on properties of the deuteron, paying special attention to the perturbativeness of the expansion. We then turn to three-nucleon interactions, focusing on operator ambiguities and their interplay with regulator effects. We then discuss the nuclear Green's function Monte Carlo method, going over both wave-function correlations and approximations for the two- and three-body propagators. Following this, we present a range of results on light nuclei: Binding energies and distribution functions are contrasted and compared, starting from several different microscopic interactions.

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Cited by 2 Pith papers

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    Pfaffian-Jastrow neural quantum states yield ground-state energies and charge radii for nuclei up to A=58, with weak p-wave terms reducing average energy error to ~3% while revealing Hamiltonian sensitivity and A^3 scaling.

  2. Challenging chiral EFT with tritium beta decay

    nucl-th 2026-06 unverdicted novelty 6.0

    Chiral EFT predictions at N2LO for the tritium Gamow-Teller matrix element, with parameters fixed from scattering, overestimate the empirical value and indicate large higher-order corrections.