Results 71 to 80 of about 1,391,702 (218)

Approximate solutions for the single soliton in a Skyrmion-type model with a dilaton scalar field

open access: yes, 2005
We consider the analytical properties of the single-soliton solution in a Skyrmion-type Lagrangian that incorporates the scaling properties of quantum chromodynamics (QCD) through the coupling of the chiral field to a scalar field interpreted as a bound ...
C. A. García Canal   +3 more
core   +1 more source

A universal asymptotic regime in the hyperbolic nonlinear Schr\"odinger equation [PDF]

open access: yes, 2016
The appearance of a fundamental long-time asymptotic regime in the two space one time dimensional hyperbolic nonlinear Schr\"odinger (HNLS) equation is discussed.
Ablowitz, Mark J.   +2 more
core   +2 more sources

ANALYTICAL APPROXIMATE SOLUTION OF NON-LINEAR PROBLEM BY HOMOTOPY PERTURBATION METHOD (HPM) [PDF]

open access: yesMatrix Science Mathematic, 2019
In this article, we want to find the analytic approximate solution of nonlinear problems by using Homotopy Perturbation Method. Using the Homotopy Perturbation Method once we express the nonlinear problem into infinite number of sub linear problems and ...
Ihtisham ul Haq
doaj   +1 more source

On the solution of a `solvable' model of an ideal glass of hard spheres displaying a jamming transition

open access: yes, 2010
We discuss the analytical solution through the cavity method of a mean field model that displays at the same time an ideal glass transition and a set of jamming points.
Mezard, Marc   +3 more
core   +3 more sources

A New Efficient Algorithm to Solve Non-Linear Fractional Ito Coupled System and Its Approximate Solution

open access: yesWalailak Journal of Science and Technology, 2014
The aim of the present article is to obtain the approximate analytical solution of time fractional Ito coupled equations by using the homotopy perturbation method. The fractional derivatives are described in the Caputo sense.
Sunil KUMAR
doaj   +1 more source

On the equivalence of approximate stationary axially symmetric solutions of Einstein field equations

open access: yes, 2016
We study stationary axially symmetric solutions of the Einstein vacuum field equations that can be used to describe the gravitational field of astrophysical compact objects in the limiting case of slow rotation and slight deformation.
Abishev, Medeu   +4 more
core   +1 more source

Numerical solution of the color superconductivity gap in a weak coupling constant [PDF]

open access: yes, 2002
We present the numerical solution of the full gap equation in a weak coupling constant $g$. It is found that the standard approximations to derive the gap equation to the leading order of coupling constant are essential for a secure numerical evaluation ...
B. Barrois   +14 more
core   +2 more sources

Weak Pressure Gradient Approximation and Its Analytical Solutions [PDF]

open access: yesJournal of the Atmospheric Sciences, 2012
Abstract A weak pressure gradient (WPG) approximation is introduced for parameterizing supradomain-scale (SDS) dynamics, and this method is compared to the relaxed form of the weak temperature gradient (WTG) approximation in the context of 3D, linearized, damped, Boussinesq equations.
openaire   +3 more sources

Comparison of Approximate Analytical and Numerical Solutions of the Allen Cahn Equation

open access: yesInternational Journal of Differential Equations
Allen Cahn (AC) equation is highly nonlinear due to the presence of cubic term and also very stiff; therefore, it is not easy to find its exact analytical solution in the closed form.
Safdar Hussain   +4 more
doaj   +1 more source

Approximate solution to the CGHS field equations for two-dimensional evaporating black holes

open access: yes, 2010
Callan, Giddings, Harvey and Strominger (CGHS) previously introduced a two-dimensional semiclassical model of gravity coupled to a dilaton and to matter fields.
Ori, Amos
core   +1 more source

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