TY - JOUR
T1 - The Gaussian Beam Methods for Schrödinger-Poisson Equations
JO - Journal of Computational Mathematics
VL - 2
SP - 261
EP - 272
PY - 2010
DA - 2010/04
SN - 28
DO - http://doi.org/10.4208/jcm.2009.10-m1005
UR - https://global-sci.org/intro/article_detail/jcm/8518.html
KW - Schrödinger-Poisson equations, Gaussian beam methods, Vlasov-Poisson equations.
AB - <p style="text-align: justify;">As an important model in quantum semiconductor devices, the Schrödinger-Poisson equations have generated widespread interests in both analysis and numerical simulations in recent years. In this paper, we present Gaussian beam methods for the numerical simulation of the one-dimensional Schrödinger-Poisson equations. The Gaussian beam methods for high frequency waves outperform the geometrical optics method in that the former are accurate even around caustics. The purposes of the paper are first to develop the Gaussian beam methods, based on our previous methods for the linear Schrödinger equation, for the Schrödinger-Poisson equations, and then check their validity for this weakly-nonlinear system.</p>