Structure of Nuclei from Lattice Simulations

Meißner, Ulf‐G.

doi:10.7566/jpscp.6.010005

Cited by 1 publication

(1 citation statement)

References 34 publications

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“…Building upon the early developments, 61 NLEFT has extended its reach to light and medium-mass nuclei, mostly of eveneven type. This has enabled detailed predictions [62][63][64] of nuclear structure properties, in particular the binding energy for 3 H and 4 He at NNLO, 65 as well as binding energies for isotopic chains with Z = 1, 2, 4, 6 and 8, 66 together with root-mean-square radii and proton and neutron densities. Moreover, NLEFT has given further impulse to the investigation of α-clustering in nuclear matter.…”

Section: Nuclear Lattice Effective Field Theorymentioning

confidence: 99%

Wave function matching for the quantum many-body problem

Elhatisari

Bovermann

Epelbaum

et al. 2023

Preprint

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We introduce a new approach for solving quantum many-body systems called wave function matching. Wave function matching transforms the interaction between particles so that the wave functions at short distances match that of an easily computable interaction. This allows for calculations of systems that would otherwise be impossible due to problems such as Monte Carlo sign cancellations. We apply the method to lattice Monte Carlo simulations of light nuclei, medium-mass nuclei, neutron matter, and nuclear matter. We use interactions at next-to-next-to-next-to-leading order in the framework of chiral effective field theory and find good agreement with empirical data. These results are accompanied by new insights on the nuclear interactions that may help to resolve long-standing challenges in accurately reproducing nuclear binding energies, charge radii, and nuclear matter saturation in ab initio calculations.

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