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Ab Initio Limits of Atomic Nuclei.

S R Stroberg1,2, J D Holt2,3, A Schwenk4,5,6

  • 1Department of Physics, University of Washington, Seattle, Washington 98195, USA.

Physical Review Letters
|January 29, 2021
PubMed
Summary
This summary is machine-generated.

This study predicts the boundaries of atomic nuclei existence, known as proton and neutron drip lines, for light to medium-mass nuclei. Calculations using advanced nuclear interactions show consistency with experimental data, guiding future research at rare-isotope beam facilities.

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Area of Science:

  • Nuclear Physics
  • Quantum Many-Body Theory
  • Nuclear Structure

Background:

  • Understanding the limits of nuclear existence is crucial for nuclear physics.
  • Proton and neutron drip lines define the boundaries of nuclear stability.
  • Accurate theoretical predictions are needed to guide experimental searches.

Purpose of the Study:

  • To predict the proton and neutron drip lines for light to medium-mass nuclei.
  • To quantify uncertainties in ab initio nuclear calculations.
  • To provide testable predictions for neutron-rich isotopes.

Main Methods:

  • Utilized a chiral two- and three-nucleon interaction.
  • Employed the valence-space in-medium similarity renormalization group (VS-IMSRG) method.
  • Calculated ground-state and separation energies for approximately 700 isotopes.

Main Results:

  • Predicted drip lines for atomic nuclei from helium to iron.
  • Quantified theoretical uncertainties using experimental data.
  • Achieved consistency between predictions and known experimental drip lines.

Conclusions:

  • The study successfully predicts nuclear drip lines with quantified uncertainties.
  • Predictions for neutron-rich sodium to chromium isotopes offer new experimental targets.
  • This work advances the understanding of nuclear existence limits.