High-resolution momentum distributions from low-resolution wave functions
arXiv:2402.00634 · doi:10.1016/j.physletb.2024.138591
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 (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.
9 pages, 8 figures, updated with revisions
References in corpus (35)
- The high-precision, charge-dependent Bonn nucleon-nucleon potential (CD-Bonn)
- Quantum Monte Carlo methods for nuclear physics
- Realistic models of pion-exchange three-nucleon interactions
- From low-momentum interactions to nuclear structure
- Similarity Renormalization Group for Nucleon-Nucleon Interactions
- High-quality two-nucleon potentials up to fifth order of the chiral expansion
- Nucleon-Nucleon Correlations, Short-lived Excitations, and the Quarks Within
- Quantum Monte Carlo calculations of nuclei
- Momentum sharing in imbalanced Fermi systems
- Semilocal momentum-space regularized chiral two-nucleon potentials up to fifth order
- Coordinate-space solution of the Skyrme-Hartree-Fock-Bogolyubov equations within spherical symmetry. The program HFBRAD (v1.0)
- Nucleon and nucleon-pair momentum distributions in A <= 12 nuclei
- Modified Structure of Protons and Neutrons in Correlated Pairs
- Probing the Repulsive Core of the Nucleon-Nucleon Interaction via the 4He(e,e'pN) Triple-Coincidence Reaction
- Direct Observation of Proton-Neutron Short-Range Correlation Dominance in Heavy Nuclei
- Probing the core of the strong nuclear interaction
- Are Occupation Numbers Observable?
- The nuclear contacts and short range correlations in nuclei
- New applications of renormalization group methods in nuclear physics
- Generalized nuclear contacts and the nucleon's momentum distributions
- Variational calculation of the ground state of closed-shell nuclei up to
- Operator Evolution via the Similarity Renormalization Group I: The Deuteron
- Short-range correlations in nuclei with similarity renormalization group transformations
- Energy and momentum dependence of nuclear short-range correlations - Spectral function, exclusive scattering experiments and the contact formalism
- Short-range correlation physics at low RG resolution
- High-momentum tails from low-momentum effective theories
- Neutrinoless double-beta decay: combining quantum Monte Carlo and the nuclear shell model with the generalized contact formalism
- Extracing the number of short-range corerlated nucleon pairs from inclusive electron scattering data
- In-Medium Similarity Renormalization Group Approach to the Nuclear Many-Body Problem
- Probing few-body nuclear dynamics via 3H and 3He (e,e'p)pn cross-section measurements
- Operator evolution from the similarity renormalization group and the Magnus expansion
- The quasi-deuteron model at low RG resolution
- Exact restoration of Galilei invariance in density functional calculations with quantum Monte Carlo
- Renormalization group evolution of optical potentials: explorations using a toy model
- Nuclear three-body short-range correlations in coordinate space