Results 111 to 120 of about 421,152 (262)

Role of spin-orbit coupling and evolution of the electronic structure of WTe$_2$ under an external magnetic field

open access: yes, 2015
Here, we present a detailed study on the temperature and angular dependence of the Shubnikov-de-Haas (SdH) effect in the semi-metal WTe$_2$. This compound was recently shown to display a very large non-saturating magnetoresistance which was attributed to
Balicas, L.   +7 more
core   +1 more source

Crank–Nicolson Method for Singularly Perturbed Unsteady Parabolic Problem With Multiple Boundary Turning Points

open access: yesAdvances in Mathematical Physics, Volume 2024, Issue 1, 2024.
In this paper, a numerical scheme for a time‐dependent singularly perturbed parabolic convection–diffusion problem with boundary turning points is presented. The problem exhibits a left boundary layer in the spatial domain. We use the Crank–Nicolson method for temporal discretization and a nonstandard finite difference approach for spatial ...
Yimesgen Mehari Kebede   +3 more
wiley   +1 more source

A robust computational technique for a system of singularly perturbed reaction–diffusion equations

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2014
In this paper, a singularly perturbed system of reaction–diffusion Boundary Value Problems (BVPs) is examined. To solve such a type of problems, a Modified Initial Value Technique (MIVT) is proposed on an appropriate piecewise uniform Shishkin mesh.
Kumar Vinod   +2 more
doaj   +1 more source

A new second-order difference approximation for nonlocal boundary value problem with boundary layers

open access: yesMathematical Modelling and Analysis, 2020
The aim of this paper is to present finite difference method for numerical solution of singularly perturbed linear differential equation with nonlocal boundary condition.
Derya Arslan
doaj   +1 more source

A numerical scheme for singularly perturbed delay differential equations of convection-diffusion type on an adaptive grid

open access: yesMathematical Modelling and Analysis, 2018
In this paper, an adaptive mesh strategy is presented for solving singularly perturbed delay differential equation of convection-diffusion type using second order central finite difference scheme.
Pramod P. Chakravarthy   +2 more
doaj   +1 more source

A Numerical Approach for Diffusion-Dominant Two-Parameter Singularly Perturbed Delay Parabolic Differential Equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2023
A numerical scheme is developed to solve a large time delay two-parameter singularly perturbed one-dimensional parabolic problem in a rectangular domain.
Solomon Woldu Worku   +1 more
doaj   +1 more source

Interior layers in a reaction-diffusion equation with a discontinuous diffusion coefficient [PDF]

open access: yes, 2010
In this paper a problem arising in the modelling of semiconductor devices motivates the study of singularly perturbed differential equations of reaction–diffusion type with discontinuous data.
C. de Falco, E. O'Riordan
core  

Electronic structure of Pu and Am metals by self consistent relativistic GW

open access: yes, 2011
We present the results of calculations for Pu and Am performed using an implementation of self-consistent relativistic GW method. The key feature of our scheme is to evaluate polarizability and self-energy in real space and Matsubara's time.
Haule, K.   +3 more
core   +1 more source

A Parameter Uniform Almost First Order Convergent Numerical Method for a Semi-Linear System of Singularly Perturbed Delay Differential Equations

open access: yesBiomath, 2014
In this paper an initial value problem for asemi-linear system of two singularly perturbed first order delay differential equations is considered on the interval(0,2]. The components of the solution of this system exhibit initial layers at 0 and interior
Nagaranjan Shivaranjan   +2 more
doaj   +1 more source

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