Search Results - subject:"Green’s function"

Three-dimensional quantum simulation of multigate nanowire field effect transistors

Shin, Mincheol - In: Mathematics and Computers in Simulation (MATCOM) 79 (2008) 4, pp. 1060-1070

theory and the non-equilibrium Green’s function formalism, and its simulation consists of solutions of the three …

Persistent link: https://www.econbiz.de/10011050516

Discrete conservation of nonnegativity for elliptic problems solved by the hp-FEM

Šolín, Pavel; Vejchodský, Tomáš; Araiza, Roberto - In: Mathematics and Computers in Simulation (MATCOM) 76 (2007) 1, pp. 205-210

Most results related to discrete nonnegativity conservation principles (DNCP) for elliptic problems are limited to finite differences and lowest-order finite element methods (FEM). In this paper we show that a straightforward extension to higher-order finite element methods (hp-FEM) in the...

Persistent link: https://www.econbiz.de/10011050978

Monte Carlo modelling of imperfections in two-dimensional photonic crystals

Langtry, Tim; Botten, Lindsay; Asatryan, Ara; … - In: Mathematics and Computers in Simulation (MATCOM) 62 (2003) 3, pp. 385-393

In this paper we describe a Monte Carlo simulation of imperfections in photonic crystals, a new class of materials with optical properties that offer promise in a range of potential applications in the areas of information and communications technology. We describe the relevant physical and...

Persistent link: https://www.econbiz.de/10010870734

A Feynman–Kac path-integral implementation for Poisson’s equation using an h-conditioned Green’s function

Hwang, Chi-Ok; Mascagni, Michael; Given, James A. - In: Mathematics and Computers in Simulation (MATCOM) 62 (2003) 3, pp. 347-355

source term. In our approach, we use an h-conditioned Green’s function instead of simulating Brownian trajectories in detail … to implement this path-integral computation. The h-conditioned Green’s function allows us to represent the integral of … residence time density function: the h-conditioned Green’s function. The h-conditioned Green’s function allows us to solve the …

Persistent link: https://www.econbiz.de/10011050910

Analysis and comparison of Green’s function first-passage algorithms with “Walk on Spheres” algorithms

Hwang, Chi-Ok; Mascagni, Michael - In: Mathematics and Computers in Simulation (MATCOM) 63 (2003) 6, pp. 605-613

We analyze the optimization of the running times of Green’s function first-passage (GFFP) algorithms. The running times …

Persistent link: https://www.econbiz.de/10011051198