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Quantum fluid (or hydrodynamic) models provide an attractive alternative for the modeling and simulation of the electron dynamics in nano-scale objects. Compared to more standard approaches, such as density functional theory or phase-space…

量子物理 · 物理学 2021-10-12 Giovanni Manfredi , Paul-Antoine Hervieux , Jérôme Hurst

A covariant, composite scalar diquark, Fadde'ev amplitude model for the nucleon is used to calculate pseudoscalar, isoscalar- and isovector-vector, axial-vector and scalar nucleon form factors. The last yields the nucleon sigma-term and…

核理论 · 物理学 2009-01-14 J. C. R. Bloch , C. D. Roberts , S. M. Schmidt

Results of charge form factors calculations for several unstable neutron-rich isotopes of light, medium and heavy nuclei (He, Li, Ni, Kr, Sn) are presented and compared to those of stable isotopes in the same isotopic chain. For the lighter…

We evaluate the scattering functions of a gas of spin-polarized, non-interacting fermions confined in a quasi-onedimensional harmonic trap at zero temperature. The main focus is on the inelastic scattering spectrum and on the angular…

统计力学 · 物理学 2009-11-07 Patrizia Vignolo , Anna Minguzzi , M. P. Tosi

For the first time an analytic expression was obtained for the inelastic neutron scattering law with an isotropic neutron source within the gas model, considering moderating medium temperature as a parameter. The inelastic scattering law is…

We study the structure factors for spin-independent WIMP scattering off xenon based on state-of-the-art large-scale shell-model calculations, which are shown to yield a good spectroscopic description of all experimentally relevant isotopes.…

核理论 · 物理学 2015-02-20 L. Vietze , P. Klos , J. Menéndez , W. C. Haxton , A. Schwenk

After a prologue which clarifies some issues left open in my last paper, the main features of the tetron model of elementary particles are discussed in the light of recent developments, in particular the formation of strong and electroweak…

高能物理 - 唯象学 · 物理学 2014-11-18 Bodo Lampe

The standard model coherent elastic neutrino-nucleus scattering (CE$\nu$NS) cross section is subject to nuclear form factor uncertainties, mainly driven by the root-mean-square radius of the neutron density distribution. Motivated by…

高能物理 - 唯象学 · 物理学 2019-07-02 D. Aristizabal Sierra , Jiajun Liao , D. Marfatia

Understanding the charged current quasielestic (CCQE) neutrino-nucleus interaction is important for precision studies of neutrino oscillations. The theoretical description of the interaction depends on the combination of a nuclear model…

高能物理 - 唯象学 · 物理学 2015-12-30 Bhubanjyoti Bhattacharya , Gil Paz , Anthony J. Tropiano

Shell model wave functions have been used to form microscopic g-folding optical potentials with which elastic scattering data from 8He, 10,11C, and 18,20,22O scattering on hydrogen has been analyzed. Those potentials, the effective…

核理论 · 物理学 2009-11-13 S. Karataglidis , Y. J. Kim , K. Amos

We present a closed analytical formula for the scattering intensity from charged hard sphere fluids with any arbitrary number of components. Our result is an extension to ionic systems of Vrij's analogous expression for uncharged hard…

统计力学 · 物理学 2009-10-30 Domenico Gazzillo , Achille Giacometti , Flavio Carsughi

Non-rotating neutron stars are generally treated in theoretical studies as perfect spheres. Such a treatment, however, may not be correct if strong magnetic fields are present (such as for magnetars) and/or the pressure of the matter in the…

太阳与恒星天体物理 · 物理学 2015-04-14 O. Zubairi , W. Spinella , A. Romero , R. Mellinger , F. Weber , M. Orsaria , G. Contrera

A new model for the joint neutrino flavor and plasma oscillations is introduced, in terms of the dynamics of the neutrino flavor polarization vector in a plasma background. Fundamental solutions are found for both time-invariant and…

等离子体物理 · 物理学 2013-08-01 José Tito Mendonça , Fernando Haas

An excellent hadron to electron discrimination is a crucial aspect of calorimeter-based experiments in astroparticle physics. Standard discrimination techniques require full shower development and fine granularity but in space detectors…

By using the AdS/CFT correspondence, we investigate various form factors between nucleons and mesons in a nuclear medium. In order to describe a nuclear medium holographically, we take into account the thermal charged AdS geometry with an…

高能物理 - 理论 · 物理学 2018-02-14 Chanyong Park , Jung Hun Lee

We consider the massless Nelson model with two types of massive particles which we call atoms and electrons. The atoms interact with photons via an infrared regular form-factor and thus they are Wigner-type particles with sharp mass-shells.…

数学物理 · 物理学 2020-12-22 Wojciech Dybalski , Alessandro Pizzo

We propose a hierarchical Bayesian model and state-of-art Monte Carlo sampling method to solve the unfolding problem, i.e., to estimate the spectrum of an unknown neutron source from the data detected by an organic scintillator. Inferring…

仪器与探测器 · 物理学 2020-01-08 Haonan Zhu , Yoann Altmann , Angela Di Fulvioand Stephen McLaughlin , Sara Pozzi , Alfred Hero

Separated flows past complex geometries are modelled by discrete vortex techniques. The flows are assumed to be rotational and inviscid, and a new technique is described to determine the streamfunctions for linear shear profiles. The…

chao-dyn · 物理学 2007-05-23 P. Franzese , L. Zannetti

We present the recent results of the strange vector form factors of the nucleon within the framework of the SU(3) chiral quark-soliton model. We compare our results with the recent experimental data of the SAMPLE and HAPPEX collaborations…

高能物理 - 唯象学 · 物理学 2009-11-07 Antonio Silva , Hyun-Chul Kim , Klaus Goeke

A relativistic distorted-wave impulse-approximation model is applied to neutral-current and charged-current quasi-elastic neutrino-nucleus scattering. The effects of final state interactions are investigated and the sensitivity of the…

核理论 · 物理学 2007-05-23 C. Giusti , A. Meucci , F. D. Pacati