Nuclear-matter saturation and symmetry energy within $\Delta$--full chiral effective field theory

Abstract

Nuclear saturation and the symmetry energy are key properties of low-energy nuclear physics that depend on fine details of the nuclear interaction. The equation-of-state around saturation is also an important anchor for extrapolations to higher densities and studies of neutron stars. Here we develop a unified statistical framework that uses realistic nuclear forces to link the theoretical modeling of finite nuclei and infinite nuclear matter. We construct fast and accurate emulators for nuclear-matter observables and employ an iterative history-matching approach to explore and reduce the enormous parameter domain of $\Delta$-full chiral interactions. We perform rigorous uncertainty quantification and find that model calibration including \nuc{16}{O} observables gives saturation predictions that are more precise than those that only use few-body data.

5 pages, 3 figures, updated Supplemental Material can be found in PRC version

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Cited by in corpus (10)

• Eigenvector Continuation and Projection-Based Emulators
• Emulating \emph{ab initio} computations of infinite nucleonic matter
• A Bayesian mixture model approach to quantifying the empirical nuclear saturation point
• Inference of the low-energy constants in $\Delta$-full chiral effective field theory including a correlated truncation error
• Diagrammatic ab initio methods for infinite nuclear matter with modern chiral interactions
• Emulators for scarce and noisy data: application to auxiliary field diffusion Monte Carlo for the deuteron
• Emulators for Scarce and Noisy Data: Application to Auxiliary-Field Diffusion Monte Carlo for Neutron Matter
• Bayesian approach for many-body uncertainties in nuclear structure: Many-body perturbation theory for finite nuclei
• Chiral interactions and superfluidity in the calcium isotopic chain
• Ab initio study of the neutron and Fermi polarons on the lattice