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Neutron-rich nuclei and neutron skins from chiral low-resolution interactions
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Neutron-rich nuclei and neutron skins from chiral low-resolution interactions
abstract
Neutron-rich nuclei provide important insights to nuclear forces and to the nuclear equation of state. Advances in ab initio methods combined with new opportunities with rare isotope beams enable unique explorations of their properties based on nuclear forces applicable over the entire nuclear chart. In this paper, we develop novel chiral low-resolution interactions that accurately describe bulk properties from $^{16}$O to $^{208}$Pb. With these, we investigate density distributions and neutron skins of neutron-rich nuclei. Our results show that neutron skins are narrowly predicted over all nuclei with interesting sensitivities for the most extreme, experimentally unexplored cases.
Forward citations
Cited by 18 Pith papers
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Ab initio calculations of parity-violating electron scattering off $^{48}$Ca and $^{208}$Pb
Ab initio chiral EFT calculations of parity-violating asymmetries for 48Ca and 208Pb show mild tension with data and infer a neutron skin of 0.187(25)(18) fm for 208Pb.
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Nuclear charge radii of aluminium isotopes at the proton drip line
First charge-radius measurements along the neutron-deficient Al chain reveal a step-like increase toward the proton drip line with nearly identical radii for 22Al and 23Al, matching mirror-partner trends.
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High-precision ab initio calculations of nuclear binding energies: Tin isotopes from dripline to dripline
BCCSD[T] calculations of even-even tin isotopes predict a neutron dripline at A≈150–176 that is highly sensitive to chiral interactions and in tension with EDF results, while matching neutron-deficient S2n extrapolations.
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High-order perturbative calculations of nuclear ground states: Automated evaluation of many-body diagrams
Automated MBPT up to fifth order shows convergence trends in ground-state energies of closed-shell nuclei and decomposes fourth-order terms while comparing to IMSRG.
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Time-ordered Diagrammatic Monte Carlo for atomic nuclei
A novel time-ordered diagrammatic Monte Carlo method computes the Green's function for nuclei like 16O up to fifth order in a model space using on-the-fly Goldstone diagram sampling.
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Taming nuclear size and shape effects in superallowed beta-decay
A combined ab initio and experimental analysis of nuclear form factors reduces uncertainties in superallowed beta-decay rates, enabling a more precise first-row CKM unitarity test.
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Nuclear charge radii of aluminium isotopes at the proton drip line
First laser spectroscopy measurements of charge radii in Al isotopes from 25Al to 22Al reveal a step-like increase toward the proton drip line with similar radii for 22Al and 23Al, consistent with mirror-partner proto...
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Charge radii of Cl isotopes from x-ray spectroscopy of muonic atoms
Muonic-atom x-ray measurements determine the charge radii of 35Cl and 37Cl as 3.3333(23) fm and 3.3444(23) fm respectively, with the isotope difference 25 times more precise than before.
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Lattice calculation of the Sn isotopes near the proton dripline
First high-fidelity lattice calculations of 99-102Sn reach percent-level agreement with measured binding energies, confirm the N=50 shell closure, and find 99Sn less bound than extrapolations from heavier tin isotopes.
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Absence of a shell closure in $^{140}$Sn
Chiral-EFT ab initio computations yield a small 2+ energy in 140Sn under a closed 7/2- subshell assumption, contradicting that shell closure.
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High-order perturbative calculations of nuclear ground states: Automated evaluation of many-body diagrams
Automated MBPT through fifth order yields converging ground-state energies for closed-shell nuclei up to 78Ni and exposes missing triples/quadruples in IMSRG(2).
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Ab initio calculations of nuclear charge radii across and beyond ${}^{132}$Sn: Putting chiral EFT nuclear interactions to the test
No chiral-EFT Hamiltonian tested here reproduces all tin charge-radius trends; 1.8/2.0 (EM7.5) matches the 132Sn kink for the wrong physical reason.
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Constraining Hamiltonians from chiral effective field theory with neutron-star data
Neutron-star data, run through fast emulators, directly constrain the six two-nucleon low-energy constants of an N2LO chiral Hamiltonian, with future detectors able to strongly pin down the 3P1 channel.
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Exploring quark mass dependent three-nucleon forces in medium-mass nuclei
Adding the quark-mass-dependent F2 three-nucleon force does not improve ab initio medium-mass predictions; its main effect is to shift short-range couplings rather than add new physics.
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Revisiting the Equation-of-Motion Method: A Universal Framework for Correlated Quantum Systems
An equation-of-motion method using an IMSRG(2) correlated reference and the full one-body operator space is implemented and applied to the dipole response of 4He and closed-shell oxygen isotopes.
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Saturation of Nuclear Binding from Lattice Hamiltonians
Hartree-Fock upper bounds on lattice Hamiltonians show two-nucleon potentials do not yield accurate nuclear binding, while three-nucleon potentials saturate binding energy per nucleon through dense lattice packing rat...
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From closed shells to open shells: Coupled-cluster calculations of atomic nuclei
Symmetry-broken and equation-of-motion coupled-cluster calculations yield consistent bulk properties for Ca and Ni isotopes across medium-mass chains.
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A High Performance GPU CountSketch Implementation and Its Application to Multisketching and Least Squares Problems
The abstract claims a high-performance GPU CountSketch and a multisketched least squares solver, but the manuscript body is a different paper about 208Pb and 266Pb.
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