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The properties of $\Sigma$-hyperons in pure $\Sigma$ matter are studied with the finite-density quantum chromo-dynamics sum rule (QCDSR) approach. The $\Sigma\Sigma$ nuclear potential $U_\Sigma$ is most likely strongly attractive, it could…

核理论 · 物理学 2008-11-26 P. Li , X. H. Zhong , L. Li , P. Z. Ning

Within the framework of Skyrme energy-density functional theory, the nucleus-nucleus potential is calculated and potential energy surface is obtained with different effective forces for accurately estimating the formation cross sections of…

核理论 · 物理学 2022-06-28 Cheng Peng , Zhao-Qing Feng

In the current work we revisit the pair-potential recently proposed by Wang et al. (Phys. Chem. Chem. Phys. 10624, 22, 2020) as a well defined finite-range alternative to the widely used Lennard-Jones interaction model. The advantage of…

材料科学 · 物理学 2024-07-23 Omar-Farouk Adesida , Sebastian Havens , Livia B. Partay

In heavy-ion phenomenology, the nucleon density distribution in colliding nuclei is commonly described by a two-parameter Woods-Saxon (WS) distribution. However, this approach overlooks the detailed radial structure in the density…

核理论 · 物理学 2024-10-10 Zhengxi Yan , Jun Xu , Jiangyong Jia

S-wave pairing in neutron matter is studied within an extension of correlated basis function (CBF) theory to include the strong, short range spatial correlations due to realistic nuclear forces and the pairing correlations of the Bardeen,…

We study the zero channel radius limit of Wigner's R-matrix theory for two cases, and show that it corresponds to non-relativistic effective quantum field theory. We begin with the simple problem of single-channel n-p elastic scattering in…

核理论 · 物理学 2014-02-05 Gerald M. Hale , Lowell S. Brown , Mark W. Paris

We study systems of finite-number neutrons in a harmonic trap at the unitary limit. Two very different types of neutron-neutron interactions are applied, namely, the meson-theoretic CD-Bonn potential and hard-core square-well interactions,…

核理论 · 物理学 2019-09-04 Yi-Yuan Cheng , Thomas T. S. Kuo , Ruprecht Machleidt , Yu-Min Zhao

The properties of spin polarized pure neutron matter and symmetric nuclear matter are studied using the finite range simple effective interaction, upon its parametrization revisited. Out of the total twelve parameters involved, we now…

核理论 · 物理学 2015-02-04 B. Behera , X. Viñas , T. R. Routray , M. Centelles

A realistic model is suggested based on the quasiparticle Lagrange version of the self-consistent Finite Fermi Systems theory supplemented with the microscopically calculated surface parameters of the Landau-Migdal interaction amplitude.…

核理论 · 物理学 2007-05-23 M. Baldo , U. Lombardo , E. E. Saperstein , M. V. Zverev

The effect of scattering with non-zero impact parameters between consituents in relativistic heavy ion collisions is investigated. In solving the relativistic Boltzmann equation, the characteristic range of the collision kernel is varied…

In a recent article, Wang et al (Phys. Chem. Chem. Phys., 22, 10624 (2020)) introduced a new class of interparticle potential for molecular simulations. The potential is defined by a single range parameter, eliminating the need to decide…

统计力学 · 物理学 2023-11-08 Olivia S. Moro , Vincent Ballenegger , Tom L. Underwood , Nigel B. Wilding

We investigate forces induced by the exchange of two light neutrinos between Standard Model (SM) fermions in the presence of effective operators parametrising physics beyond the SM. We first set up a general framework in which we derive the…

高能物理 - 唯象学 · 物理学 2020-07-07 Patrick D. Bolton , Frank F. Deppisch , Chandan Hati

More recently, comprehensive application results of approximate analytical solutions of the Woods-Saxon potential in closed form for the 5-dimensional Bohr Hamiltonian have been appeared [14] and its comparison to the data for many…

核理论 · 物理学 2016-07-12 M Capak , B Gonul

We investigate the isovector component in the phenomenological mean field model of nuclei. Lane's isospin dependence, initially proposed for the nuclear optical potential, is reexamined within the context of bound states using the…

核理论 · 物理学 2024-08-26 L. Xayavong , Y. Lim , N. A. Smirnova , G. Nam

We study lower bounds on the minimal distance in theory space between four-dimensional superconformal field theories (SCFTs) connected via broad classes of renormalization group (RG) flows preserving various amounts of supersymmetry (SUSY).…

高能物理 - 理论 · 物理学 2015-06-17 Matthew Buican

We discuss various properties of singlet S pairing in neutron and nuclear matter in terms of the bare nuclon-nucleon interaction. Relations to the NN phase shifts are discussed, as well as various properties of the BCS wave function and the…

核理论 · 物理学 2007-05-23 O. Elgaroy , M. Hjorth-Jensen

Short-range correlations (SRC) in asymmetric nuclei with an unusual neutron-to-proton ratio can be studied with quasi-free two-nucleon knockout processes following the collision between accelerated ions and a proton target. We derive an…

核理论 · 物理学 2018-01-09 Sam Stevens , Jan Ryckebusch , Wim Cosyn , Andreas Waets

The Skyrme force parameters can be uniquely determined by coarse graining the NN interactions at a characteristic momentum scale. We show how exact Vlowk potentials to second order in momenta are accurately and universally saturated with…

核理论 · 物理学 2010-09-30 E. Ruiz Arriola

The experiments at LHC have shown that the SUSY (exotic) bound states are likely to form bound states in an entirely similar fashion as ordinary quarks form bound states, i.e., quarkonium. Also, the interaction between two squarks is due to…

高能物理 - 唯象学 · 物理学 2015-05-13 Sameer M. Ikhdair , Ramazan Sever

In this study, we reveal the difference between Woods-Saxon (WS) and Generalized Symmetric Woods-Saxon (GSWS) potentials in order to describe the physical properties of a nucleon, by means of solving Schr\"odinger eq. for the two…

核理论 · 物理学 2018-01-16 B. C. Lütfüoğlu