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We introduce an exactly solvable one-dimensional potential that supports both bound and/or resonance states. This potential is a generalization of the well-known 1D Morse potential where we introduced a deformation that preserves the finite…

量子物理 · 物理学 2021-09-02 I. A. Assi , A. D. Alhaidari , H. Bahlouli

Using the technique of tridiagonal representation approach; for the first time, we extend this method to study quantum systems with literally perturbed Hamiltonians. Specifically, we consider a quantum system in a 3D spherical oscillator…

量子物理 · 物理学 2022-12-12 Tunde Joseph Taiwo

Popular models for describing the luminosity-density profiles of dynamically hot stellar systems (e.g., Jaffe, Hernquist, Dehnen) were constructed to match the deprojected form of de Vaucouleurs' $R^{1/4}$ light-profile. However, we now…

天体物理学 · 物理学 2008-12-18 Balsa Terzic , Benjamin J. Sprague

The probability density function (PDF) of the gas density in turbulent supersonic flows is investigated with high-resolution numerical simulations. In a systematic study, we compare the density statistics of compressible turbulence driven…

天体物理学 · 物理学 2009-11-13 Christoph Federrath , Ralf S. Klessen , Wolfram Schmidt

The standard model of classical Density Functional Theory for pair potentials consists of a hard-sphere functional plus a mean-field term accounting for long ranged attraction. However, most implementations using sophisticated Fundamental…

计算物理 · 物理学 2021-01-04 James F. Lutsko , Cédric Schoonen

Weak gravitational lensing surveys have the potential to directly probe mass density fluctuation in the universe. Recent studies have shown that it is possible to model the statistics of the convergence field at small angular scales by…

天体物理学 · 物理学 2008-11-26 Dipak Munshi , Bhuvnesh Jain

We use a specific form of the interpolation function in the MOND formalism, which optimally accounts for the internal structure of dwarf spheroidal (dSph) galaxies, to explore the consequences it has on the scaling relations seen in these…

星系天体物理 · 物理学 2010-03-04 X. Hernandez , S. Mendoza , T. Suarez , T. Bernal

A method is presented for finding anisotropic distribution functions for stellar systems with known, spherically symmetric, densities, which depends only on the two classical integrals of the energy and the magnitude of the angular…

天体物理学 · 物理学 2008-12-31 Zhenglu Jiang , Leonid Ossipkov

Synthesizing fully developed three-dimensional turbulent velocity fields remains a long-standing problem in fluid mechanics and an open challenge for generative modeling. The difficulty arises from the coexistence of extreme dimensionality,…

流体动力学 · 物理学 2026-03-16 Tianyi Li , Michele Buzzicotti , Fabio Bonaccorso , Luca Biferale

The framework of relativistic energy density functionals is extended to include correlations related to the restoration of broken symmetries and to fluctuations of collective variables. The generator coordinate method is used to perform…

核理论 · 物理学 2010-04-29 J. M. Yao , J. Meng , P. Ring , D. Vretenar

In this paper a new method is derived for constructing electromagnetic surface sources for stationary axisymmetric electrovac spacetimes endowed with non-smooth or even discontinuous Ernst potentials. This can be viewed as a generalization…

广义相对论与量子宇宙学 · 物理学 2016-08-31 L. Fernandez-Jambrina

We propose a method for recovering the two-dimensional gravitational potential of galaxy clusters which combines data from weak and strong gravitational lensing. A first estimate of the potential from weak lensing is improved at the…

天体物理学 · 物理学 2009-11-11 M. Cacciato , M. Bartelmann , M. Meneghetti , L. Moscardini

A hybrid spectral/finite-element code is developed to numerically solve the resistive finite-pressure magnetohydrodynamic equilibria without the necessity of postulating nested magnetic flux surfaces in the non-axisymmetric toroidal…

等离子体物理 · 物理学 2024-12-30 Jian Zhang , Ping Zhu , Chris C. Hegna

Accurate asymptotic solutions are presented for axisymmetric deformation of thin layers constrained by either two rigid plates or two rigid spheres. Those solutions are developed using Saint-Venant's principle and the layer thinness as the…

偏微分方程分析 · 数学 2021-02-16 Alexander B. Movchan , Kirill R. Rebrov , Gregory J. Rodin

This paper introduces an efficient algorithm based on the Parity-Consistent Decomposition (PCD) method to determine the WD of pre-transformed polar codes. First, to address the bit dependencies introduced by the pre-transformation matrix,…

信息论 · 计算机科学 2026-01-13 Yang Liu , Bolin Wu , Yuxin Han , Kai Niu

Electronic structures are fully determined by the exchange-correlation (XC) potential. In this work, we develop a new method to construct reliable XC potentials by properly mixing the exact exchange and the local density approximation…

化学物理 · 物理学 2024-08-06 Chen Huang

Gravitational potentials in the cosmos are deeper than expected from observed visible objects, a phenomenon usually attributed to dark matter, presumably in the form of a new fundamental particle. Until such a particle is observed, the jury…

宇宙学与河外天体物理 · 物理学 2011-12-07 Scott Dodelson

Special bases of orthogonal polynomials are defined, that are suited to expansions of density and potential perturbations under strict particle number conservation. Particle-hole expansions of the density response to an arbitrary…

核理论 · 物理学 2009-11-11 B. G. Giraud , A. Weiguny , L. Wilets

A specific modification of Newtonian dynamics known as MOND has been shown to reproduce the dynamics of most astrophysical systems at different scales without invoking non-baryonic dark matter (DM). There is, however, a long-standing…

星系天体物理 · 物理学 2022-11-09 M. Lopez-Corredoira , J. E. Betancort-Rijo , R. Scarpa , Z. Chrobakova

BiFold calculates the density-dependent (DDM3Y$n$, BDM3Y$n$, CDM3Y$n$) or independent double folded potentials between two colliding spherical nuclei. It is written in a Python package form to give the ability to use the potentials directly…

计算物理 · 物理学 2022-12-05 Mesut Karakoç