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The structure and density dependence of the pairing gap in infinite matter is relevant for astrophysical phenomena and provides a starting point for the discussion of pairing properties in nuclear structure. Short-range correlations can…

核理论 · 物理学 2017-10-27 A. Rios , A. Polls , W. H. Dickhoff

The influence of nucleon-nucleon short-ranged correlations (SRC) on nuclear super-allowed $\beta$ decay is examined. The need for this is driven by the observed depletion of spectroscopic strength obtained in studies of $(e,e')$ and…

核理论 · 物理学 2022-12-21 Levi Condren , Gerald A. Miller

Short range correlations are introduced using unitary correlation method in a relativistic approach to the equation of state of the infinite nuclear matter in the framework of the Hartree-Fock approximation. It is shown that the…

核理论 · 物理学 2011-07-19 P. K. Panda , João da Providência , Constança Providência

The single-particle spectrum of the two nuclei 133Sb and 101Sn is studied within the framework of the time-dependent degenerate linked-diagram perturbation theory starting from a class of onshell-equivalent realistic nucleon-nucleon…

核理论 · 物理学 2009-10-13 L. Coraggio , A. Covello , A. Gargano , N. Itaco , T. T. S. Kuo

Binding energies of ^{3}H, ^{4}He, and ^{16}O are calculated, using low-momentum nucleon-nucleon interactions (V_{low-k}) for a wide range of the cutoff momentum \Lambda. In addition, single-particle energies in nuclei around ^{16}O are…

核理论 · 物理学 2017-08-23 S. Fujii , H. Kamada , R. Okamoto , K. Suzuki

The nucleon properties and structure should be modified by short-range correlations (SRC) among nucleons. By analyzing SRC ratio data, we extract the mass of nucleon in the SRC pair and the expected number of pn-SRC pairs in deuterium,…

核理论 · 物理学 2021-01-25 Rong Wang , Xurong Chen , Taofeng Wang

The self-energy of nucleons in asymmetric nuclear matter is evaluated employing different realistic models for the nucleon-nucleon interaction. Starting from the Brueckner Hartree Fock approximation without the usual angle-average in the…

核理论 · 物理学 2009-11-10 Kh. S. A. Hassaneen , H. Müther

We review the impact of nuclear forces on matter at neutron-rich extremes. Recent results have shown that neutron-rich nuclei become increasingly sensitive to three-nucleon forces, which are at the forefront of theoretical developments…

核理论 · 物理学 2015-09-08 K. Hebeler , J. D. Holt , J. Menendez , A. Schwenk

This is a very short review of neutrino-nucleus interactions and their influence on the analysis of long-baseline experiments.

高能物理 - 实验 · 物理学 2015-05-01 Ulrich Mosel

The relativistic structure of the self-energy of a nucleon in nuclear matter is investigated including the imaginary and real components which arise from the terms of first and second order in the NN interaction. A parameterized form of…

核理论 · 物理学 2009-10-30 A. Trasobares , A. Polls , A. Ramos , H. Müther

An approximate method to quantify the mass dependence of the number of two-nucleon (2N) short-range correlations (SRC) in nuclei is suggested. The proposed method relies on the concept of the "local nuclear character" of the SRC. We…

核理论 · 物理学 2012-10-24 Maarten Vanhalst , Jan Ryckebusch , Wim Cosyn

Three-nucleon short-range correlation ($3N$ SRC) represents a rare and intriguing part of the nuclear dynamics at short distance, beyond the two-nucleon short-range correlation ($2N$ SRC). To search its existence is a hot topic in the…

核理论 · 物理学 2024-07-03 Na-Na Ma , Rong Wang

The large nucleon-nucleon scattering length, and the isospin approximate symmetry, are low energy properties of quantum chromodynamics (QCD). These entail correlations in the binding energies of light nuclei, e.g., the A=3 iso-multiplet,…

核理论 · 物理学 2015-08-25 Sergiu Lupu , Nir Barnea , Doron Gazit

The simple model describing charge independence and charge symmetry breaking of the pion-nucleon coupling constant is proposed. The model, which has simple physical meaning and foundation, suggests directly proportional dependence of the…

高能物理 - 唯象学 · 物理学 2019-08-28 V. A. Babenko , N. M. Petrov

Correlations in the nuclear wave-function beyond the mean-field or Hartree-Fock approximation are very important to describe basic properties of nuclear structure. Attempts are made to explore details of these correlations in exclusive…

核理论 · 物理学 2007-05-23 H. Müther

We study a particular class of relativistic nuclear energy density functionals in which only nucleon degrees of freedom are explicitly used in the construction of effective interaction terms. Short-distance (high-momentum) correlations, as…

核理论 · 物理学 2008-11-26 T. Niksic , D. Vretenar , P. Ring

We make a review of the main nuclear effects that affect neutrino-nucleus cross sections. We discuss how the different models in the literature try to describe these different effects, and thus try to compare between them. We focus on the…

核理论 · 物理学 2010-05-07 M. Valverde , J. Nieves , J. E. Amaro , M. J. Vicente-Vacas

We identify a new class of three-nucleon forces that arises in the low-energy effective theory of nuclear interactions including pions. We estimate their contribution to the energy of neutron and nuclear matter and find that it can be as…

核理论 · 物理学 2024-11-04 V. Cirigliano , M. Dawid , W. Dekens , S. Reddy

The relation between nuclear saturation and NN-correlations is examined. Nucleons bound in a nucleus have a reduced effective mass due to the mean field. This results in off-energy-shell scatterings modifying the free-space NN-interaction…

核理论 · 物理学 2007-05-23 H. S. Köhler , S. A. Moszkowski

Various kinds of isovector nucleon effective masses are used in the literature to characterize the momentum/energy dependence of the nucleon symmetry potential or self-energy due to the space/time non-locality of the underlying isovector…

核理论 · 物理学 2018-02-21 Bao-An Li , Bao-Jun Cai , Lie-Wen Chen , Jun Xu