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As follows from the energies of single-particle states in ^{40}Ca, ^{90}Zr and ^{208}Pb nuclei the contribution of many-particle NN forces to the nuclear single-particle potential is at least the sum of repulsive and attractive parts…

Nuclear Theory · Physics 2007-05-23 B. L. Birbrair , V. I. Ryazanov

Brueckner calculations including a microscopic three-body force have been extended to isospin asymmetric nuclear matter. The effects of the three-body force on the equation of state and on the single-particle properties of nuclear matter…

Nuclear Theory · Physics 2007-05-23 W. Zuo , A. Lejeune , U. Lombardo , J. F. Mathiot

By calculating the contribution of the $\pi-\pi$ three-body force to the three-nucleon binding energy in terms of the $\pi N$ amplitude using perturbation theory, we are able to determine the importance of the energy dependence and the…

Nuclear Theory · Physics 2009-10-28 T-Y Saito , I. R. Afnan

In multifragmentation of hot nuclear matter, properties of fragments embedded in a soup of nucleonic gas and other fragments should be modified as compared with isolated nuclei. Such modifications are studied within a simple model where…

Nuclear Theory · Physics 2015-06-11 J. N. De , S. K. Samaddar , X. Viñas , M. Centelles , I. N. Mishustin , W. Greiner

The influence of finite temperatures and pairing correlations on the ground state properties of multi $\Lambda$- Ca, Sn and Pb hypernuclei is explored using finite temperature Hartree Fock Bogoliubov approach and contact pairing…

Nuclear Theory · Physics 2024-07-30 Bahruz Suleymanli , Kutsal Bozkurt , Elias Khan , Haşim Güven , Jérôme Margueron

Ground state properties of finite nuclei ($^{16}$O and $^{40}$Ca) are evaluated from realistic nucleon-nucleon interactions. The calculations are based on the Brueckner-Hartree-Fock approximation. Special attention is paid to the role of…

Nuclear Theory · Physics 2011-07-19 Kh. Gad , H. Müther

The broad range of accumulated experimental data on the binding energies for single-particle states in nuclei is examined as a function of the constituent number of neutrons and protons and an unexpectedly simple pattern emerges. The…

Nuclear Theory · Physics 2021-12-14 J. P. Schiffer , B. P. Kay , J. chen

The thermal evolution of a few thermodynamic properties of the nuclear surface like its thermodynamic potential energy, entropy and the symmetry free energy are examined for both semi-infinite nuclear matter and finite nuclei. The…

Nuclear Theory · Physics 2015-06-19 B. K. Agrawal , D. Bandyopadhyay , J. N. De , S. K. Samaddar

We elucidate the fate of neighboring two and three-$\alpha$ particles in cold neutron matter by focusing on an analogy between such $\alpha$ systems and Fermi polarons realized in ultracold atoms. We describe in-medium excitation properties…

Nuclear Theory · Physics 2021-12-15 H. Moriya , H. Tajima , W. Horiuchi , K. Iida , E. Nakano

A key point of Dirac Brueckner Hartree Fock calculations for nuclear matter is to decompose the self energy of the nucleons into Lorentz scalar and vector components. A new method is introduced for this decomposition. It is based on the…

Nuclear Theory · Physics 2014-11-18 H. Müther , S. Ulrych , H. Toki

We study neutron matter and symmetric nuclear matter with the quark-meson model for the two-nucleon interaction. The Bethe-Bruckner-Goldstone many-body theory is used to describe the correlations up to the three hole-line approximation with…

Nuclear Theory · Physics 2014-12-11 M. Baldo , K. Fukukawa

Thermal properties of asymmetric nuclear matter, including the temperature dependence of the symmetry energy, single-particle properties, and differential isospin fractionation, are investigated with different neutron-proton effective mass…

Nuclear Theory · Physics 2015-01-23 Jun Xu , Lie-Wen Chen , Bao-An Li

The properties of hot matter are studied in the frame of the relativistic Brueckner-Hartree-Fock theory. The equations are solved self-consistently in the full Dirac space. For the interaction we used the potentials given by Brockmann and…

Nuclear Theory · Physics 2008-11-26 H. Huber , F. Weber , M. K. Weigel

Few-nucleon correlations in nuclear matter at finite densities and temperatures are explored. Using the Dyson equation approach leads to effective few-body equations that include self energy corrections and Pauli blocking factors in a…

Nuclear Theory · Physics 2009-11-07 M. Beyer

Using the model of hexagonal clusters we express the surface, curvature and Gauss curvature coefficients of the nuclear binding energy in terms of its bulk coefficient. Using the derived values of these coefficients and a single fitting…

Nuclear Theory · Physics 2020-12-22 V. V. Sagun , K. A. Bugaev , A. I. Ivanytskyi

Three-body forces acting on a $\Lambda$ hyperon in a nuclear medium are investigated, with special focus on the so-called hyperon puzzle in neutron stars. The hyperon-nucleon two-body interaction deduced from SU(3) chiral effective field…

Nuclear Theory · Physics 2020-08-13 Dominik Gerstung , Norbert Kaiser , Wolfram Weise

The single-particle potentials for nucleons and hyperons in neutron-rich matter generally depends on the density and isospin asymmetry of the medium as well as the momentum and isospin of the particle. It further depends on the temperature…

Nuclear Theory · Physics 2014-07-02 Lie-Wen Chen , Che Ming Ko , Bao-An Li , Chang Xu , Jun Xu

The thermal evolution of the shell correction energy is investigated for deformed nuclei using Strutinsky prescription in a self-consistent relativistic mean-field framework. For temperature independent single-particle states corresponding…

Nuclear Theory · Physics 2009-11-07 B. K. Agrawal , Tapas Sil , S. K. Samaddar , J. N. De

The hot nucleus $^{171}$Yb is investigated by the covariant density functional theory with the PC-PK1 effective interaction. The thermodynamic quantities are evaluated with the canonical ensemble theory. The pairing correlations is treated…

Nuclear Theory · Physics 2021-08-05 Tao Yan , Yanlong Lin , Lang Liu

We studied the Fermi and Gamow-Teller responses of cold symmetric nuclear matter within a unified dynamical model, suitable to account for both short- and long-range correlation effects. The formalism of correlated basis functions has been…

Nuclear Theory · Physics 2015-06-11 Alessandro Lovato , Cristina Losa , Omar Benhar