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We study the quantitative pointwise behavior of the solutions of the linearized Boltzmann equation for hard potentials, Maxwellian molecules and soft potentials, with Grad's angular cutoff assumption. More precisely, for solutions inside…

偏微分方程分析 · 数学 2018-06-13 Yu-Chu Lin , Haitao Wang , Kung-Chien Wu

In the previous paper I \cite{bhagwat20} we have shown that self-consistent Extended Thomas-Fermi (ETF) potentials and densities associated with a given finite-range interaction can be parametrized by generalized Fermi distributions. As a…

核理论 · 物理学 2021-03-03 A. Bhagwat , M. Centelles , X. Viñas , P. Schuck

A method is proposed for evaluation of single and double layer potentials of the Laplace and Helmholtz equations on piecewise smooth manifold boundary elements with constant densities. The method is based on a novel two-term decomposition…

数值分析 · 数学 2023-09-15 Shoken Kaneko , Ramani Duraiswami

We derive the finite-volume correction to the binding energy of an N-particle quantum bound state in a cubic periodic volume. Our results are applicable to bound states with arbitrary composition and total angular momentum, and in any…

高能物理 - 格点 · 物理学 2018-02-02 Sebastian König , Dean Lee

The symmetry energy coefficients in finite nuclei have been studied systematically with a covariant density functional theory (DFT) and compared with the values calculated using several available mass tables. Due to the contamination of…

核理论 · 物理学 2014-01-21 H. Mei , Y. Huang , J. M. Yao , H. Chen

Accurate evaluation of nearly singular integrals plays an important role in many boundary integral equation based numerical methods. In this paper, we propose a variant of singularity swapping method to accurately evaluate the layer…

数值分析 · 数学 2023-05-11 Gang Bao , Wenmao Hua , Jun Lai , Jinrui Zhang

Slater determinants built from the single-particle wave functions of the analytically solvable Ginocchio potential are used to approximate the self-consistent Hartree-Fock solutions for the ground states of nuclei. The results indicate that…

核理论 · 物理学 2011-05-12 M. V. Stoitsov , S. S. Dimitrova , S. Pittel , P. Van Isacker , A. Frank

The in-medium physics of heavy quarkonium is an ideal proving ground for our ability to connect knowledge about the fundamental laws of physics to phenomenological predictions. One possible route to take is to attempt a description of heavy…

高能物理 - 唯象学 · 物理学 2013-02-26 Alexander Rothkopf

A revision of the recursive method proposed by S.A. Shakir [Am. J.Phys. \textbf{52}, 845 (1984)] to solve bound eigenvalues of the Schr\"odinger equation is presented. Equations are further simplified and generalized for computing wave…

量子物理 · 物理学 2007-05-23 Sérgio L. Morelhão , André V. Perrotta

The determination of $|V_{us}|$ from kaon semileptonic decays requires the value of the form factor $f_+(q^2=0)$ which can be calculated precisely on the lattice. We provide the one-loop partially quenched chiral perturbation theory…

高能物理 - 格点 · 物理学 2017-04-26 Claude Bernard , Johan Bijnens , Elvira Gámiz , Johan Relefors

Any unitary compact two-dimensional CFT with $c>1$ and no symmetries beyond Virasoro has a parametrically large density of primary states at large spin for $\bar{h}>\bar{h}_\text{extr}\sim \frac{c-1}{24}$, of a universal form determined by…

高能物理 - 理论 · 物理学 2020-01-29 Henry Maxfield

In the framework of the canonical model of hydrodynamics, where fluid is assumed to be ideal and incompressible, waves are potential, two-dimensional, and symmetric, the authors have recently reported the existence of a new type of gravity…

流体动力学 · 物理学 2020-01-29 Vasyl P. Lukomsky , Ivan S. Gandzha

We study the state-counting problem that arises in the SU(2) black hole entropy calculation in loop quantum gravity. More precisely, we compute the leading term and the logarithmic correction of both the spherically symmetric and the…

广义相对论与量子宇宙学 · 物理学 2012-08-15 Jonathan Engle , Karim Noui , Alejandro Perez , Daniele Pranzetti

We propose a new method to obtain approximate solutions for the Schr\"{o}dinger equation with an arbitrary potential that possesses bound states. This method, relying on the auxiliary field technique, allows in many cases to find analytical…

量子物理 · 物理学 2008-06-13 B. Silvestre-Brac , C. Semay , F. Buisseret

We present a study of the spectral properties like the energy spectrum, the eigenmodes and density of states of a classical finite system of two-dimensional (2D) charged particles which are confined by a quadratic potential. Using the…

凝聚态物理 · 物理学 2007-05-23 V. A. Schweigert , F. M. Peeters

We propose a new method to solve the Hartree-Fock-Bogoliubov equations for weakly bound nuclei, which works for both spherical and axially deformed cases. In this approach, the quasiparticle wave functions are expanded in a complete set of…

核理论 · 物理学 2008-11-26 M. Stoitsov , N. Michel , K. Matsuyanagi

We obtain the spectrum of bound states for a modified P\"oschl-Teller and square potential wells in the nonlinear Schr\"odinger equation. For a fixed norm of bound states, the spectrum for both potentials turns out to consist of a finite…

斑图形成与孤子 · 物理学 2022-01-11 L. Al Sakkaf , U. Al Khawaja

Large-scale shell-model calculations are carried out in the model space including neutron-hole orbitals $2p_{1/2}$, $1f_{5/2}$, $2p_{3/2}$, $0i_{13/2}$, $1f_{7/2}$ and $0h_{9/2}$ to study the structure and electromagnetic properties of…

核理论 · 物理学 2016-07-20 Chong Qi , L. Y. Jia , G. J. Fu

The Ornstein-Zernike integral equation method has been employed for a single-component hard sphere fluid in terms of the Percus-Yevick (PY) and Martynov-Sarkisov (MS) approximations. Virial equation of state has been computed in both…

统计力学 · 物理学 2023-06-21 Purevkhuu Munkhbaatar , Banzragch Tsednee , Tsogbayar Tsednee , Tsookhuu Khinayat

An upgraded concept of solvability of Schr\"{o}dinger-type equations is proposed. In a broader methodical context of non-perturbative quantum theory the innovation involves potentials which are piece-wise analytic yielding differential…

量子物理 · 物理学 2016-05-10 Miloslav Znojil