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相关论文: $\rho$-$\omega$ mixing and spin dependent CSV pote…

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Based on the Watson expansion of the multiple scattering series, we employ a nonlocal translationally invariant nuclear density derived within the symmetry-adapted no-core shell model (SA-NCSM) framework from a chiral…

核理论 · 物理学 2024-08-26 R. B. Baker , Ch. Elster , T. Dytrych , K. D. Launey

The effects of magnetic interaction between vector mesons and nucleons on the propagation (mass and width) of the $\rho$-meson in particular moving through very dense nuclear matter is studied and the modifications, qualitative and…

核理论 · 物理学 2008-11-26 Abhee Kanti Dutt- Mazumder , Binayak Dutta-Roy , Anirban Kundu , Triptesh De

We study the symmetry energy in infinite nuclear matter employing a non-relativistic Brueckner-Hartree-Fock approach and using various new nucleon-nucleon (NN) potentials, which fit np and pp scattering data very accurately. The potential…

核理论 · 物理学 2009-10-30 L. Engvik , M. Hjorth-Jensen , R. Machleidt , H. Muether , A. Polls

The relativistic Hartree approach describing the bound states of both nucleons and anti-nucleons in finite nuclei has been extended to include tensor couplings for the $\omega$- and $\rho$-meson. After readjusting the parameters of the…

核理论 · 物理学 2009-11-07 Guangjun Mao

Microscopic calculations based on realistic nuclear hamiltonians, while yielding accurate results for the energies of the ground and low-lying excited states of nuclei with $A \leq 12$, fail to reproduce the empirical equilibrium properties…

Using the relativistic mean-field model with nonlinear couplings between the isoscalar and isovector mesons, we study the properties of isospin-asymmetric nuclear matter. Not only the vector mixing,…

核理论 · 物理学 2022-04-18 Tsuyoshi Miyatsu , Myung-Ki Cheoun , Koichi Saito

We extend a recent chiral approach to nuclear matter by including the most general (momentum-independent) NN-contact interaction. Iterating this two-parameter contact-vertex with itself and with one-pion exchange the emerging energy per…

核理论 · 物理学 2009-11-10 S. Fritsch , N. Kaiser

Motivated by recent measurements which strongly support a nonzero reactor mixing angle $\theta_{13}$, we study a deviation from $S_3$ neutrino discrete symmetry by explicitly breaking the neutrino mass matrix with a general retrocirculant…

高能物理 - 唯象学 · 物理学 2013-08-13 H. B. Benaoum

Wigner symmetry in Nuclear Physics provides a unique example of a non-perturbative long distance symmetry, a symmetry strongly broken at short distances. We analyse the consequences of such a concept within the framework of One Boson…

核理论 · 物理学 2009-04-02 A. Calle Cordon , E. Ruiz Arriola

Within the minimum model of neutron stars (NS) consisting of neutrons, protons and electrons, a new approach is proposed for inferring the symmetry energy of super-dense neutron-rich nucleonic matter above twice the saturation density…

核理论 · 物理学 2020-06-01 Bao-An Li , Wen-Jie Xie

Previous work on neutrino emission from proto-neutron stars which employed full solutions of the Boltzmann equation showed that the average energies of emitted electron neutrinos and antineutrinos are closer to one another than predicted by…

高能天体物理现象 · 物理学 2013-05-30 Luke F. Roberts , Sanjay Reddy , Gang Shen

We derive a T-violating P-conserving optical potential for neutron-nucleus scattering, starting from a uniquely determined two-body $\rho$-exchange interaction with the same symmetry. We then obtain limits on the T-violating $\rho$-nucleon…

核理论 · 物理学 2009-10-28 J. Engel , C. R. Gould , V. Hnizdo

The neutrinoless double beta decay is a pivotal weak nuclear process that holds the potential to unveil the Majorana nature of neutrinos and predict their absolute masses. In this study, we delve into examining the impact of spin-dependent…

核理论 · 物理学 2024-02-05 S. Sarkar , Y. Iwata

Various theories beyond the Standard Model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter. A parity-odd interaction between polarized nucleons and unpolarized matter proportional to…

核实验 · 物理学 2013-05-20 H. Yan , W. M. Snow

We report a quantum Monte Carlo calculation of the equation of state of symmetric nuclear matter using local interactions derived from chiral effective field theory up to next-to-next-to-leading order fit to few-body observables only. The…

核理论 · 物理学 2020-05-13 D. Lonardoni , I. Tews , S. Gandolfi , J. Carlson

In this Letter, I work out spin entanglement properties of neutron-proton scattering using the exact S-matrix, generalizing previous works based on S wave. The dependence of spin entanglement on momentum, scattering angle, and initial spin…

核理论 · 物理学 2023-06-09 Dong Bai

Significant progress has been made in recent years in constraining nuclear symmetry energy at and below the saturation density of nuclear matter using data from both terrestrial nuclear experiments and astrophysical observations. However,…

核理论 · 物理学 2015-06-12 Bao-An Li , Lie-Wen Chen , Farrukh J. Fattoyev , William G. Newton , Chang Xu

In this work, we adopt the Nambu-Jona-Lasinio (NJL) model that ensures the nuclear matter saturation properties to study the density dependence of the symmetry energy. With the interactions constrained by the chiral symmetry, the symmetry…

核理论 · 物理学 2021-06-02 Si-Na Wei , Wei-Zhou Jiang , Rong-Yao Yang , Dong-Rui Zhang

We use a relativistic mean field model to study the charge density distributions of exotic oxygen isotopes. Nonlinear isoscalar-isovector terms which are not constrained by the present data are considered and the $\rho NN$ tensor coupling…

核理论 · 物理学 2008-11-26 W. Z. Jiang , Y. L. Zhao

We develop a new approach for calculating the spin-independent 2-neutrino exchange potential (2-NEP) between non-relativistic fermions which places emphasis on the neutrino vacuum state, an area of theoretical interest in recent years. The…

高能物理 - 唯象学 · 物理学 2019-06-13 Quan Le Thien , Dennis E. Krause
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