Work

High-resolution momentum distributions from low-resolution wave functions

Year: 2024

Type: article

Abstract: Nucleon momentum distributions calculated with a common one-body operator vary with the resolution scale (and scheme) of the Hamiltonian used. For high-resolution potentials such as Argonne v18 (AV18) there is a high-momentum tail, reflecting short-range correlations in the nuclear wave function, which is reduced or absent for softer, lower-resolution interactions. We explore if the similarity renormalization group (SRG) can be used to quantitatively reproduce the high-resolution distributions from variational Monte Carlo at all momenta using SRG-evolved operators and empirically fit single-particle orbitals rather than a full RG evolution of many-body wave functions. The goal of this approach is to enable calculations of high-resolution distributions for a wider range of nuclei as well as for other interactions, and provides connections to phenomenological analyses of experiments.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2024.138591

Authors: A.J. Tropiano, S.K. Bogner, R.J. Furnstahl, M.A. Hisham, A. Lovato, R.B. Wiringa

Institutions: Argonne National Laboratory, Facility for Rare Isotope Beams, Michigan State University, The Ohio State University

Language: English

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond