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The Empirical Valence Bond (EVB) method offers a suitable framework to obtain reactive potentials through the coupling of non-reactive force fields. However, most of the implemented functional forms for the coupling terms depend on complex…

化学物理 · 物理学 2021-01-27 Ivan Scivetti , Kakali Sen , Alin M. Elena , Ilian Todorov

Simultaneous $\chi^{2}$ analyses previously made for elastic scattering and fusion cross section data for the $^{6}$Li+$^{208}$Pb system is extended to the $^{7}$Li+$^{208}$Pb system at near-Coulomb-barrier energies based on the extended…

核理论 · 物理学 2008-11-26 W. Y. So , T. Udagawa , K. S. Kim , S. W. Hong , B. T. Kim

The ``extended Overhauser model'' [Overhauser, Can. J. Phys. 1995, 73, 683] for the calculation of the spherically and system-averaged pair density (APD) has been recently combined with the Kohn-Sham equations to yield realistic APD and…

化学物理 · 物理学 2007-07-05 Paola Gori-Giorgi , Andreas Savin

The energy density is the prime parameter to define the deconfinement of quarks and gluons occurring in collisions of heavy ions. Recently, there is mounting evidence that many observables in proton-proton collisions behave in a manner very…

高能物理 - 唯象学 · 物理学 2016-08-09 E. Cuautle , G. Paić

An empirical $s_cp^3_a$ tight-binding (TB) model is applied to the investigation of electronic states in semiconductor quantum dots. A basis set of three $p$-orbitals at the anions and one $s$-orbital at the cations is chosen. Matrix…

其他凝聚态物理 · 物理学 2009-11-11 Stefan Schulz , Gerd Czycholl

Starting from light to superheavy nuclei, we have calculated the effective surface properties such as the symmetry energy, neutron pressure, and symmetry energy curvature using the coherent density fluctuation model. The isotopic chains of…

核理论 · 物理学 2020-04-22 Abdul Quddus , M. Bhuyan , S. K. Patra

The pairing energy density functionals (EDFs) that include the spatial derivative and kinetic terms of the pair densities are discussed. The coupling constants of the pairing EDF are adjusted to reproduce the experimental pairing rotational…

核理论 · 物理学 2018-02-14 Nobuo Hinohara

For a $(3+1)$-dimensional generalization of the Schwinger model, we compute the interaction energy between two test charges. The result shows that the static potential profile contains a linear term leading to the confinement of probe…

高能物理 - 理论 · 物理学 2017-05-24 Antonio Aurilia , Patricio Gaete , José A. Helayël-Neto , Euro Spallucci

An extended version of the pseudo-SU(3) model which includes both spin and proton-neutron degrees of freedom is used to study the influence of the pairing interaction on K-band mixing, B(E2) values and quadrupole moments. Using the…

核理论 · 物理学 2009-10-28 D. Troltenier , C. Bahri , J. P. Draayer

Pairing correlation of Cooper pair is a fundamental property of multi-fermion interacting systems. For nucleons, two modes of the Cooper-pair coupling may exist, namely of $S_{12}=0$ with $L_{12}=0$ (spin-singlet s-wave) and $S_{12}=1$ with…

核理论 · 物理学 2021-05-18 Tomohiro Oishi , Goran Kruzic , Nils Paar

Accurate potential energy surfaces (PESs) have been determined for the $^3$A$'$ and $^3$A$''$ states of N$_2$O using electronic structure calculations at the multireference configuration interaction level with Davidson correction (MRCI+Q)…

We investigate the pairing symmetry of layered BiS$_2$ compounds by assuming that electron-electron correlation is still important so that the pairing is rather short range. We find that the extended s-wave pairing symmetry always wins over…

超导电性 · 物理学 2014-04-18 Yi Liang , Xianxin Wu , Wei-Feng Tsai , Jiangping Hu

We revisit a sudden increase of the isotope shift of the charge radius of Pb isotope at $N>126$ based on a Skyrme Hartree-Fock-Bogoliubov theory. New parametrizations of the pairing interaction optimized for selected four Skyrme…

核理论 · 物理学 2022-04-20 W. Horiuchi , T. Inakura

A comparative study of the nuclear Gamow-Teller response (GTR) within conceptually different state-of-the-art approaches is presented. Three nuclear microscopic models are considered: (i) the recently developed charge-exchange relativistic…

核理论 · 物理学 2015-06-18 E. Litvinova , B. A. Brown , D. -L. Fang , T. Marketin , R. G. T. Zegers

Simultaneous $\chi^{2}$ analyses are performed for elastic scattering and fusion cross section data for the $^{12}$C+$^{208}$Pb system at near-Coulomb-barrier energies by using the extended optical model approach in which the polarization…

核理论 · 物理学 2008-11-26 W. Y. So , T. Udagawa , S. W. Hong , B. T. Kim

The ground-state deformations of the Ge isotopes are investigated in the framework of Gogny-Hartree-Fock-Bogoliubov (HFB) and Skyrme Hartree-Fock plus pairing in the BCS approximation. Five different Skyrme parametrizations are used to…

核理论 · 物理学 2008-11-26 Lu Guo , J. A. Maruhn , P. -G. Reinhard

Repeated series of experiments by checking of a prediction concerning capability of gravitational field generation at braking of charged massive particles in the substance are conducted. The prediction was made within the framework of the…

综合物理 · 物理学 2007-05-23 Tsipenyuk D. Yu

The atom-exchange and atomization dissociation dynamics for the N($^4$S) + N$_2(^1 \Sigma_{\rm g}^+)$ reaction is studied using a reproducing kernel Hilbert space (RKHS)-based, global potential energy surface (PES) at the…

化学物理 · 物理学 2024-04-30 JingChun Wang , Juan Carlos San Vicente Veliz , Markus Meuwly

In the present work, we have done a systematic shell model study of $N=82$ and $N=126$ isotones. For the $N=82$ isotones, we have performed calculations using SN100PN interaction, while for $N=126$ isotones, we have used KHPE interaction.…

核理论 · 物理学 2022-06-10 Bharti Bhoy , Praveen C. Srivastava

In order to study the pairing symmetry in non-centrosymmetric superconductors, we solve the linearized Eliashberg's equation on the two-dimensional extended Hubbard model in the presence of the Rashba-type spin-orbit coupling (RSOC) within…

超导电性 · 物理学 2013-02-13 K. Shigeta , S. Onari , Y. Tanaka