We consider a general class of discrete nonlinear Schrödinger equations (DNLS) on the lattice h Z with mesh size h> 0. In the continuum limit when h→ 0, we prove that the limiting …
LA Kalyakin - Russian Mathematical Surveys, 1989 - iopscience.iop.org
Abstract CONTENTS Introduction § 1. Hyperbolic problems without dispersion. Asymptotic decomposition of a small amplitude solution into simple waves § 2. The method of averaging …
One of the main difficulties in micromagnetics simulation is the severe time step constraint introduced by the exchange field. Using standard explicit integrators leads to a physical time …
This is a comprehensive introduction to Landau-Lifshitz equations and Landau-Lifshitz- Maxwell equations, beginning with the work by Yulin Zhou and Boling Guo in the early …
I Bejenaru, AD Ionescu, CE Kenig, D Tataru - Annals of Mathematics, 2011 - JSTOR
We consider the Schrödinger map initial-value problem \cases∂_tϕ=ϕ*Δϕ\,on\BbbR^d*\ BbbR,&\ϕ(0)=ϕ_0,&\endcases where ϕ: ℝ d× ℝ→ 𝕊 2↪ ℝ 3 is a smooth function. In all …
W Ding, Y Wang - Science in China Series A: Mathematics, 2001 - Springer
In this paper we show that there exists a unique local smooth solution for the Cauchy problem of the Schrödinger flow for maps from a compact Riemannian manifold into a …
RL Jerrard, D Smets - Journal of the European Mathematical Society, 2015 - ems.press
We propose a weak formulation for the binormal curvature flow of curves in R3. This formulation is sufficiently broad to consider integral currents as initial data, and sufficiently …