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Nuclear Theory·nucl-th

Thursday·December 24, 2020

7 papers—3 primary·4 cross-listed

All7Primary3Cross-lists4
  1. 01

    [Submitted on 22 Dec 2020]

    Light nuclei with semilocal momentum-space regularized chiral interactions up to third order

    P. Maris🇺🇸 · E. Epelbaum🇩🇪 · R. J. Furnstahl🇺🇸 · J. Golak🇵🇱 · K. Hebeler🇩🇪 · T. Hüther🇩🇪 · H. Kamada🇯🇵 · H. Krebs🇩🇪 · Ulf-G. Meißner🇩🇪 · J. A. Melendez🇺🇸 · A. Nogga🇩🇪 · P. Reinert🇩🇪 and 8 other authors

    We present a systematic investigation of few-nucleon systems and light nuclei using the current LENPIC interactions comprising semilocal momentum-space regularized two- and three-nucleon forces up to third chiral order (NLO). Following our earlier study utilizing the coordinate-space regularized interactions, the two low-energy constants entering the three-body force are determined from the triton binding energy and the differential cross section minimum in elastic nucleon-deuteron scattering. Predictions are made for selected observables in elastic nucleon-deuteron scattering and in the deuteron breakup reactions, for properties of the and nuclei, and for spectra of -shell nuclei up to . A comprehensive error analysis is performed including an estimation of correlated truncation uncertainties for nuclear spectra. The obtained predictions are generally found to agree with experimental data within errors. Similar to the coordinate-space regularized chiral interactions at the same order, a systematic overbinding of heavier nuclei is observed, which sets in for and increases with .

    Comments:
    21 pages, 13 figures, 5 tables, added reference
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2012.12396 [pdf]
    PRC(2021)·114 citations
  2. 02

    [Submitted on 23 Dec 2020]

    Quenching of single-particle strength from direct reactions with stable and rare-isotope beams

    T. Aumann🇩🇪 · C. Barbieri🇬🇧 · D. Bazin🇺🇸 · C. A. Bertulani🇺🇸 · A. Bonaccorso🇮🇹 · W. H. Dickhoff · A. Gade🇺🇸 · M. Gómez-Ramos🇩🇪 · B. P. Kay🇺🇸 · A. M. Moro🇪🇸 · T. Nakamura🇯🇵 · A. Obertelli🇩🇪 and 3 other authors

    In this review article we discuss the present status of direct nuclear reactions and the nuclear structure aspects one can study with them. We discuss the spectroscopic information we can assess in experiments involving transfer reactions, heavy-ion-induced knockout reactions and quasifree scattering with (p,2p), (p,pn), and (e,e'p) reactions. In particular, we focus on the proton-to-neutron asymmetry of the quenching of the spectroscopic strength.

    Comments:
    138 pages, 63 figures
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    2012.12553 [pdf]
    PPNP(2021)·119 citations
  3. 03

    [Submitted on 23 Dec 2020]

    The fate of nonlinear perturbations near the QCD critical point

    Golam Sarwar🇮🇳 · Md Hasanujjaman🇮🇳 · Mahfuzur Rahaman🇮🇳 · Abhijit Bhattacharyya🇮🇳 · Jan-e Alam🇮🇳

    The impact of the QCD critical point on the propagation of nonlinear waves has been studied. The effects have been investigated within the scope of second-order causal dissipative hydrodynamics by incorporating the critical point into the equation of state, and the scaling behaviour of transport coefficients and of thermodynamic response functions. Near the critical point, the nonlinear waves are found to be significantly damped which may result in the disappearance of the Mach cone effects of the away side jet. Such damping may lead to enhancement in the fluctuations of elliptic and higher flow coefficients. Therefore, the disappearance of Mach cone effects and the enhancement of fluctuations in flow harmonics in the event-by-event analysis may be considered as signals of the critical endpoint.

    Comments:
    One LaTex file for text and 6 pdf files for figures
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    2012.12668 [pdf]
    PLB(2021)·6 citations

Affiliations

first authorsco-authorsvia INSPIRE