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We develop the method for the calculation of the total reaction cross sections induced by the halo nuclei and stable nuclei. This approach is based on the Glauber theory, which is valid for nuclear reactions at high energy. It is extended…

核理论 · 物理学 2018-01-17 Wen-Jun Guo , Huan-Qing Jiang , Jian-Ye Liu , Wei Zuo , Zhong-Zhou Ren , Xi-Guo Lee

The general behavior of the nuclear equation of state (EOS), relevant for the description of neutron stars (NS), is studied within a Bayesian approach applied to a set of models based on a density dependent relativistic mean field…

核理论 · 物理学 2022-05-02 Tuhin Malik , Márcio Ferreira , B. K. Agrawal , Constança Providência

Embedded random matrix ensembles are generic models for describing statistical properties of finite isolated interacting quantum many-particle systems. For the simplest spinless systems, with say $m$ particles in $N$ single particle states…

量子物理 · 物理学 2015-04-06 V. K. B. Kota , Manan Vyas

Effects of difference in the spin and parity distributions for the surrogate and neutron-induced reactions are investigated. Without assuming specific (schematic) spin-parity distributions, it was found that the surrogate ratio method can…

核理论 · 物理学 2010-04-22 Satoshi Chiba , Osamu Iwamoto

We have studied nuclear structure and reaction properties of Ne, Mg and Si isotopes, using relativistic mean field densities, in the frame work of Glauber model. Total reaction cross section $\sigma_R$ for Ne isotopes on 12C target have…

核理论 · 物理学 2015-06-16 R. N. Panda , Mahesh K. Sharma , S. K. Patra

In recent studies of many-body localization in nonintegrable quantum systems, the distribution of the ratio of two consecutive energy level spacings, $r_n=(E_{n+1}-E_n)/(E_{n}-E_{n-1})$ or $\tilde{r}_n=\min(r_n,r_n^{-1})$, has been used as…

数学物理 · 物理学 2024-09-04 Shinsuke M. Nishigaki

The statistical distribution of levels of an integrable system is claimed to be a Poisson distribution. In this paper, we numerically generate an ensemble of N dimensional random diagonal matrices as a model for regular systems. We evaluate…

可精确求解与可积系统 · 物理学 2011-09-27 A. A. Abul-Magd , A. Y. Abul-Magd

The small-angle scattering of neutrons on large scale inhomogeneities of two-component systems in refraction range is considered. We supposed, that neutrons acquire phase shifts describing by the Gaussian distribution function. It is shown…

无序系统与神经网络 · 物理学 2007-05-23 Y. N. Skryabin , A. V. Chukin

The coupled-channels density-matrix technique for nuclear reaction dynamics, which is based on the Liouville-von Neumann equation with Lindblad dissipative terms, is developed with the inclusion of full angular momentum couplings. It allows…

核理论 · 物理学 2010-12-23 Alexis Diaz-Torres

We discuss the phenomenon of universal fluctuations in mesoscopic systems and nuclei. For this purpose we use Random Matrix Theory (RMT). The statistical $S$-matrix is used to obtain the physical observables in the case of Quantum Dots,…

介观与纳米尺度物理 · 物理学 2018-05-29 M. S. Hussein , J. G. G. S. Ramos

Background: Good understanding of the cross sections for (anti)neutrino scattering off nuclear targets in the few-GeV energy region is a prerequisite for correct interpretation of results of ongoing and planned oscillation experiments.…

核理论 · 物理学 2012-09-12 Artur M. Ankowski

We describe the properties of complex nuclei, such as the Sn isotopes with mass numbers A = 100 - 132, in terms of the free nucleon--nucleon interaction as obtained from meson--exchange theory. This amounts to first calculating an effective…

核理论 · 物理学 2007-05-23 T. Engeland , M. Hjorth-Jensen , A. Holt , E. Osnes

The non-relativistic model of nuclear matter with zero-range Skyrme interactions is employed within a Bayesian approach in order to study the behavior of neutron stars (NSs) equation of state (EOS). A minimal number of constraints from…

高能天体物理现象 · 物理学 2024-02-28 Mikhail V. Beznogov , Adriana R. Raduta

Realistic nuclear level densities (NLDs) obtained within the spectral distribution method (SDM) are employed to study nuclear processes of astrophysical interest. The merit of SDM lies in the fact that the NLDs corresponding to many body…

核理论 · 物理学 2022-05-04 Sangeeta , T. Ghosh , B. Maheshwari , G. Saxena , B. K. Agrawal

Statistical nuclear spectroscopy (also called spectral distribution method), introduced by J.B. French in late 60's and developed in detail in the later years by his group and many other groups, is based on the Gaussian forms for the state…

核理论 · 物理学 2022-10-17 V. K. B. Kota , Manan Vyas

We consider a tight-binding Hamiltonian defined on the quasiperiodic Ammann-Beenker tiling. Although the density of states (DOS) is rather spiky, the integrated DOS is quite smooth and can be used to perform spectral unfolding. The effect…

无序系统与神经网络 · 物理学 2007-05-23 Michael Schreiber , Uwe Grimm , Rudolf A. Roemer , Jian-Xin Zhong

The total bremsstrahlung flux-averaged cross-sections $\langle{\sigma(E_{\rm{\gamma max}})}\rangle$ for the photonuclear reactions $^{181}\rm{Ta}(\gamma,\textit{x}n; \textit{x} \leq 8)^{181-\textit{x}}\rm{Ta}$ have been measured in the…

We investigate the spectra of adjacency matrices of multiplex networks under random matrix theory (RMT) framework. Through extensive numerical experiments, we demonstrate that upon multiplexing two random networks, the spectra of the…

统计力学 · 物理学 2021-11-10 Tanu Raghav , Sarika Jalan

The dineutron as a bound chargeless nucleus of two identical nucleons has been attracting attention for many decades. In addition to the study of the formation of a bound dineutron in the outgoing channel of some specific nuclear reactions,…

The ability of the Gogny forces of the D1 family to describe the nucleon-nucleus scattering is studied. To this end, we use an optical model potential built up using a semi-microscopic nuclear matter approach. The real and imaginary parts…

核理论 · 物理学 2020-12-15 Juan Lopez-Moraña , Xavier Viñas