Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.192501
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Funding
- U. S. Department of Energy, Office of Nuclear Physics
- NUCLEI SciDAC program
- LANL LDRD program
- Natural Sciences and Engineering Research Council of Canada
- ERC [307986 STRONGINT, 259218 NUCLEAREFT]
- Helmholtz Alliance Program of the Helmholtz Association [HA216/EMMI]
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
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We present the first Green's function Monte Carlo calculations of light nuclei with nuclear interactions derived from chiral effective field theory up to next-to-next-to-leading order. Up to this order, the interactions can be constructed in a local form and are therefore amenable to quantum Monte Carlo calculations. We demonstrate a systematic improvement with each order for the binding energies of A = 3 and A = 4 systems. We also carry out the first few-body tests to study perturbative expansions of chiral potentials at different orders, finding that higher-order corrections are more perturbative for softer interactions. Our results confirm the necessity of a three-body force for correct reproduction of experimental binding energies and radii, and pave the way for studying few-and many-nucleon systems using quantum Monte Carlo methods with chiral interactions.
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