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We study systematically the impact of the time-even tensor terms of the Skyrme energy density functional, i.e. terms bilinear in the spin-current tensor density, on deformation properties of closed shell nuclei corresponding to 20, 28, 40,…

核理论 · 物理学 2009-12-14 M. Bender , K. Bennaceur , T. Duguet , P. -H. Heenen , T. Lesinski , J. Meyer

The Skyrme model is a classical field theory modelling the strong interaction between atomic nuclei. It has to be quantized in order to compare it to nuclear physics. When the Skyrme model is semi-classically quantized it is important to…

高能物理 - 理论 · 物理学 2009-11-11 Steffen Krusch

Based on an extended Skyrme interaction that includes the terms in relative momenta up to sixth order, corresponding to the so-called Skyrme pseudopotential up to next-to-next-to-next-to leading order (N3LO), we derive the expressions of…

核理论 · 物理学 2018-12-05 Rui Wang , Lie-Wen Chen , Ying Zhou

We present a survey of the phenomenological adjustment of the parameters of the Skyrme-Hartree-Fock (SHF) model for a self-consistent description of nuclear structure and low-energy excitations. A large sample of reliable input data from…

核理论 · 物理学 2008-11-10 P. Klüpfel , P. --G. Reinhard , T. J. Bürvenich , J. A. Maruhn

This work is focused on the analysis of the corrective effects of the temperature, surface tension, and nuclear matter density on the fusion barriers and also fusion cross sections caused by the original version of the proximity formalism…

核理论 · 物理学 2020-10-09 Reza Gharaei , Elham Sarvari

By taking into account the surface diffuseness correction for unstable nuclei, the accuracy of the macroscopic-microscopic mass formula is further improved. The rms deviation with respect to essentially all the available mass data falls to…

核理论 · 物理学 2015-06-19 Ning Wang , Min Liu , Xizhen Wu , Jie Meng

Zero-range effective interactions are commonly used in nuclear physics to describe a many-body system in the mean-field framework. If they are employed in beyond- mean-field models, an artificial ultraviolet divergence is generated by the…

核理论 · 物理学 2013-04-19 K. Moghrabi , M. Grasso , X. Roca-Maza , G. Coló , N. Van Giai

We present a newly developed approach for the calculation of interfacial stiffness and contact area evolution between two rough bodies exhibiting self affine surface structures. Using spline assisted discretization to define localised…

软凝聚态物质 · 物理学 2021-06-04 Dorian Hanaor , Yixiang Gan , Itai Einav

A lagrangian which describes interactions between a soliton and a background field is derived for sigma models whose target is a symmetric space. The background field modifies the usual moduli space approximation to soliton dynamics in two…

高能物理 - 理论 · 物理学 2016-12-22 Derek Harland

We give a brief review on the development of phenomenological NN interactions and the corresponding quantification of statistical uncertainties. We look into the uncertainty of effective interactions broadly used in mean field calculations…

核理论 · 物理学 2016-02-01 R. Navarro Perez , J. E. Amaro , E. Ruiz Arriola

In asteroseismology, the surface effect refers to a disparity between the observed and the modelled frequencies in stars with solar-like oscillations. It originates from improper modelling of the surface layers. Correcting the surface…

The temperature dependence of the symmetry energy for isotopic chains of even-even Ni, Sn, and Pb nuclei is investigated in the framework of the local density approximation (LDA). The Skyrme energy density functional with two Skyrme-class…

核理论 · 物理学 2017-02-22 A. N. Antonov , D. N. Kadrev , M. K. Gaidarov , P. Sarriguren , E. Moya de Guerra

The curvature of field emitter tips leads to an altered tunneling potential that assumes significance when the radius of curvature is small. We provide here an analytical curvature-corrected formula for the field emission current from…

应用物理 · 物理学 2019-05-08 Debabrata Biswas , Rajasree Ramachandran

The binary neutron-star merger event, GW170817, has cast a new light on nuclear physics research. Using a neutron-star model that includes a crust equation of state (EoS), we calculate the properties of a 1.4 solar-mass neutron star. The…

核理论 · 物理学 2019-09-04 C. Y. Tsang , M. B. Tsang , Pawel Danielewicz , W. G. Lynch , F. J. Fattoyev

The possibility of adding a D-wave term to the standard Skyrme effective interaction has been widely considered in the past. Such a term has been shown to appear in the next-to-next-to-leading order of the Skyrme pseudo-potential. The aim…

核理论 · 物理学 2015-06-19 P. Becker , D. Davesne , J. Meyer , A. Pastore , J. Navarro

We consider the probability measure minimizing a free energy functional equal to the sum of a Coulomb interaction, a confinement potential and an entropy term, which arises in the statistical mechanics of Coulomb gases. In the limit where…

偏微分方程分析 · 数学 2020-10-08 Scott Armstrong , Sylvia Serfaty

We study nuclear symmetry energy and the thermodynamic instabilities of asymmetric nuclear matter in a self-consistent manner by using a modified quark-meson coupling model where the confining interaction for quarks inside a nucleon is…

核理论 · 物理学 2015-12-16 R. N. Mishra , H. S. Sahoo , P. K. Panda , N. Barik , T. Frederico

Control of surface texture in strip steel is essential to meet customer requirements during galvanizing and temper rolling processes. Traditional methods rely on post-production stylus measurements, while on-line techniques offer…

机器学习 · 计算机科学 2023-10-03 Alex Milne , Xianghua Xie

Calibration, the practice of choosing the parameters of a structural model to match certain empirical moments, can be viewed as minimum distance estimation. Existing standard error formulas for such estimators require a consistent estimate…

计量经济学 · 经济学 2024-06-19 Matthew D. Cocci , Mikkel Plagborg-Møller

The mass-dependent symmetry energy coefficients $a_{sym}(A)$ has been extracted by analysing the heavy nuclear mass differences reducing the uncertainties as far as possible in our previous work. Taking advantage of the obtained symmetry…

核理论 · 物理学 2015-05-08 Xiaohua Fan , Jianmin Dong , Wei Zuo