نتایج جستجو برای: quintic b

تعداد نتایج: 900630  

Journal: :Journal of Physics A 2022

In the present work we provide a characterization of ground states higher-dimensional quadratic-quartic model nonlinear Schr{\"o}dinger class with combination focusing biharmonic operator either an isotropic or anisotropic defocusing Laplacian (at linear level) and power-law nonlinearity. Examining principally prototypical example dimension $d=2$, find that instability arises beyond certain thr...

2002
Hideki Asada Taketoshi Kasai Masumi Kasai

It has been recently shown that the lens equation for a binary gravitational lens, which is apparently a coupled system, can be reduced to a real fifth-order (quintic) algebraic equation. Some algebraic properties of the real quintic equation are revealed. We find that the number of images on each side of the separation axis is independent of the mass ratio and separation unless the source cros...

2016
Thoudam Roshan

Numerical solutions of the coupled Klein-Gordon-Schrödinger equations is obtained by using differential quadrature methods based on polynomials and quintic B-spline functions for space discretization and RungeKutta fourth order for time discretization. Stability of the schemes are studied using matrix stability analysis. The accuracy and efficiency of the methods are shown by conducting some nu...

Journal: :Proceedings of the American Mathematical Society 1993

Journal: :Algorithms 2017
Feng-Gong Lang

In this paper, to overcome the innate drawbacks of some old methods, we present a new quintic spline method for integro interpolation. The method is free of any exact end conditions, and it can reconstruct a function and its first order to fifth order derivatives with high accuracy by only using the given integral values of the original function. The approximation properties of the obtained int...

2013
Carlos Trallero-Giner

By means of a new variational method we report a direct solution for quintic and cubic-quintic nonlinear 1D Gross-Pitaeskii equations (GPE) in a harmonic confined potential. We explore the influence of the quintic nonlinear term on the ideal 1D pure cigar-like shape model for attractive and repulsive atom-atom interaction in Bose-Einstein condensates (BEC). Also, we offer a closed analytical ex...

2006
R. PANDHARIPANDE J. SOLOMON J. WALCHER

Holomorphic disk invariants with boundary in the real Lagrangian of a quintic 3-fold are calculated by localization and proven mirror transforms. A careful discussion of the underlying virtual intersection theory is included. The generating function for the disk invariants is shown to satisfy an extension of the Picard-Fuchs differential equations associated to the mirror quintic. The Ooguri-Va...

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