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We investigate the effects of charge independence and charge symmetry breaking in neutron-rich matter. We consider neutron and proton properties in isospin-asymmetric matter at normal densities as well as the high-density neutron matter…

Nuclear Theory · Physics 2015-06-05 F. Sammarruca , L. White , B. Chen

Neutron star observations, as well as experiments on neutron-rich nuclei, used to motivate one to look at degenerate nuclear matter from its extreme, namely, pure neutron matter. As an important next step, impurities and clusters in dilute…

Nuclear Theory · Physics 2024-03-20 Hiroyuki Tajima , Hajime Moriya , Wataru Horiuchi , Eiji Nakano , Kei Iida

Based on the recent experimental observations of the dominance of tensor interaction in the ~250-600~MeV/c momentum range of nucleons in nuclei, the existence of two new properties for high-momentum distribution of nucleons in asymmetric…

Nuclear Theory · Physics 2014-03-19 Misak M. Sargsian

The symmetry energy describes how the energy of nuclear matter rises as one goes away from equal numbers of neutrons and protons. This is very important to describe neutron rich matter in astrophysics. This article reviews our knowledge of…

We study the dark matter effects on the nuclear matter parameters characterising the equation of states of super dense neutron-rich nucleonic-matter. The observables of the nuclear matter, i.e. incompressibility, symmetry energy and its…

Nuclear Theory · Physics 2021-11-29 H. C. Das , Ankit Kumar , Bharat Kumar , S. K. Biswal , Takashi Nakatsukasa , Ang Li , S. K. Patra

We reexamine several issues related to the physics of scaling in electron scattering from nuclei. A basic model is presented in which an assumed form for the momentum distribution having both long- and short-range contributions is…

Nuclear Theory · Physics 2013-05-29 D. Berardo , M. B. Barbaro , R. Cenni , T. W. Donnelly , A. Molinari

The nuclear interactions of atomic and low energy antiprotons are studied. Measurements of level shifts and widths in the lightest elements are analyzed and compared with new results obtained in heavy nuclei. Simple geometric properties of…

Nuclear Theory · Physics 2017-08-23 S. Wycech

To investigate the influence of neutron-proton asymmetry on the formation of asymmetric clusters, we perform a systematic comparative study of $^{3}$H and $\alpha$ cluster preformation in the Boron isotopic chain ($^{11-14}$B). Within the…

Nuclear Theory · Physics 2026-04-29 J. L. Jin , Q. Zhao , P. J. Li , M. Kimura , D. Beaumel , B. Zhou , J. L. Tian

Spectroscopic amplitudes play an important role in nuclear capture reactions. These amplitudes are shown to include both single-particle and polarization effects: the former through their spatial dependence and the latter through their…

Nuclear Theory · Physics 2009-11-07 Jutta Escher , Byron K. Jennings , Helmy S. Sherif

We derive the statistical limit of the spectral autocorrelation function and of the survival probability for the indirect photodissociation of molecules in the regime of non-overlapping resonances. The results are derived in the framework…

chao-dyn · Physics 2016-09-28 Y. Alhassid , Yan V. Fyodorov

Using the formalism obtained from collinear expansion, we calculate the differential cross section and azimuthal asymmetries in semi-inclusive deeply inelastic lepton-nucleon (nucleus) scattering process $e^-+N (A) \to e^-+q+X$ with both…

High Energy Physics - Phenomenology · Physics 2014-01-15 Yu-kun Song , Jian-hua Gao , Zuo-tang Liang , Xin-Nian Wang

We have carried out an (e,e'p) experiment at high momentum transfer and in parallel kinematics to measure the strength of the nuclear spectral function S(k,E) at high nucleon momenta k and large removal energies E. This strength is related…

Effects of the short-range tensor interaction on the density-dependence of nuclear symmetry energy are examined by applying an approximate expression for the second-order tensor contribution to the symmetry energy derived earlier by G.E.…

Nuclear Theory · Physics 2011-07-05 Ang Li , Bao-An Li

The off-shell behavior of the nucleon self-energy in isospin asymmetric nuclear matter is investigated within the framework of relativistic Dirac-Brueckner-Hartree-Fock approach based on projection techniques. The dependence of the Dirac…

Nuclear Theory · Physics 2014-11-20 E. N. E. van Dalen , H. Müther

The connection between the scaling function, directly extracted from the analysis of electron scattering data, and the nuclear spectral function or nuclear momentum density is investigated at depth. The dependence of the scaling function on…

Nuclear Theory · Physics 2020-09-02 M. V. Ivanov , A. N. Antonov , J. A. Caballero

The photon self-energy from chirally imbalanced quark matter is evaluated at finite temperature and density using the real time formulation of thermal field theory. The analytic structure is explored in detail exposing the cut structure…

High Energy Physics - Phenomenology · Physics 2022-05-05 Snigdha Ghosh , Nilanjan Chaudhuri , Sourav Sarkar , Pradip Roy

The neutron-proton mass difference in (isospin asymmetric) nuclear matter and finite nuclei is studied in the framework of a medium-modified Skyrme model. The proposed effective Lagrangian incorporates both the medium influence of the…

Nuclear Theory · Physics 2014-11-20 Ulf-G. Meißner , A. M. Rakhimov , A. Wirzba , U. T. Yakhshiev

We make use of isospin constraints to study the parametric coupling model and the properties of asymmetric nuclear matter. Besides the usual constraints for nuclear matter - effective nucleon mass and the incompressibility at saturation…

Symmetry energy terms from macroscopic mass formulae are investigated as generalized polarizabilities of nuclear matter. Besides the neutron-proton (n-p) symmetry energy the spin dependent symmetry energies and a scalar one are also…

Nuclear Theory · Physics 2014-11-18 Fabio L. Braghin

The main goal of the research presented in this dissertation was to develop a theoretical model for relativistic nuclear spectral functions at high missing momenta and removal energies based on the multi-nucleon short-range correlation…

Nuclear Theory · Physics 2018-05-09 Oswaldo Artiles