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Nuclear and neutron-star matter from local chiral interactions
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We report a quantum Monte Carlo calculation of the equation of state of symmetric nuclear matter using local interactions derived from chiral effective field theory up to next-to-next-to-leading order fit to few-body observables only. The empirical saturation density and energy are well reproduced within statistical and systematic uncertainties. We have also derived the symmetry energy as a function of the density, finding good agreement with available experimentally derived constraints at saturation and twice saturation density. We find that the corresponding pressure is also in excellent agreement with recent constraints extracted from gravitational waves of the neutron-star merger GW170817 by the LIGO-Virgo detection.
Forward citations
Cited by 2 Pith papers
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PMM-IMSRG emulator for the nuclear equation of state with quantified uncertainties
A parametric-matrix-model emulator reproduces IMSRG nuclear-matter energies with calibrated conformal-prediction error bars, enabling Bayesian fitting of three-nucleon couplings to saturation properties.
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From bare two-nucleon interaction to nuclear matter and finite nuclei in a relativistic framework
A leading-order relativistic chiral two-nucleon force, with four constants fit to scattering data, describes nuclear matter saturation and medium-mass nuclei binding energies and radii without three-nucleon forces.
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