PaperPanorama
FAQ

Nuclear Theory·nucl-th

Friday·February 2, 2024

13 papers—2 primary·11 cross-listed

All13Primary2Cross-lists11
  1. 01

    [Submitted on 1 Feb 2024]

    High-resolution momentum distributions from low-resolution wave functions

    A. J. Tropiano · S. K. Bogner · R. J. Furnstahl · M. A. Hisham · A. Lovato · R. B. Wiringa

    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.

    Comments:
    9 pages, 8 figures, updated with revisions
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2402.00634 [pdf]
    PLB(2024)·16 citations
  2. 02

    [Submitted on 1 Feb 2024]

    Renormalization Group Flow, Vector Manifestation and Sound Velocity in Massive Compact Stars

    Mannque Rho🇫🇷 · Long-Qi Shao🇨🇳

    The -renormalization group approach on the surface of Fermi liquid for nuclear matter to which Tom Kuo made a pioneering contribution at Stony Brook is found to inject the pivotal input in the formulation of the generalized nuclear effective field theory with acronym ``GEFT" applicable to superdense compact-star physics. A topology change in terms of skyrmions and half-skyrmions is shown to play the role of the ``putative" hadron-quark continuity (HQC)" conjectured in QCD. Crucially involved are hidden local symmetry (``HLS") and hidden scale symmetry (``HSS") with the vacuum sliding with density in nuclear medium, with the nuclear tensor force emerging as a Landau Fermi-liquid fixed-point quantity. A possibly novel paradigm, a ``Cheshire Catism," in nuclear correlations is suggested.

    Comments:
    19 pages, 3 figures. Expanded with an additional author in tribute to Tom Kuo
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
    arXiv:
    2402.00755 [pdf]
    IJMPE(2025)·3 citations

Affiliations

first authorsco-authorsvia INSPIRE