We introduce a new methodology based on the multirevolution idea for constructing integrators for stochastic differential equations in the situation where the fast oscillations themselves are driven by a Stratonovich noise. Applications include in particular highly-oscillatory Kubo oscillators and spatial discretizations of the nonlinear Schrödinger equation with fast white noise dispersion. We construct a method of weak order two with computational cost and accuracy both independent of the stiffness of the oscillations. A geometric modification that conserves exactly quadratic invariants is also presented.
A new symmetric linearly implicit exponential integrator preserving polynomial invariants or Lyapunov functions for conservative or dissipative systems
An exponential integrator for a highly oscillatory Vlasov equation
Université Européenne de Bretagne, LMBA (UMR CNRS 6205), Université de Bretagne-Sud(欧洲布列塔尼大学,LMBA(CNRS联合研究单位6205),南布列塔尼大学);Inria Nancy-Grand Est, CALVI Project & IRMA (UMR CNRS 7501), Université de Strasbourg(法国国家信息与自动化研究所南斯特拉斯堡分部,CALVI项目,IRMA(CNRS联合研究单位7501),斯特拉斯堡大学);Max Planck Institute for Plasma Physics, EURATOM Association(马克斯·普朗克等离子体物理研究所,EURATOM协会)
Improved uniform error bounds of exponential wave integrator method for long-time dynamics of the space fractional Klein-Gordon equation with weak nonlinearity
Uniform and optimal error estimates of an exponential wave integrator sine pseudospectral method for the nonlinear Schrodinger equation with wave operator
National University of Singapore(新加坡国立大学);Beijing Computational Science Research Center(北京计算科学研究中心);University of Maryland(马里兰大学)
A Uniformly Accurate Multiscale Time Integrator for the Klein-Gordon-Schrödinger Equations in the Nonrelativistic Regime via Simplified Transmission Conditions
School of Mathematics and Statistics, Xi’an Jiaotong University(西安交通大学数学与统计学院);Department of Mathematics, National University of Singapore(新加坡国立大学数学系)
A uniformly accurate (UA) multiscale time integrator pseudospectral method for the Dirac equation in the nonrelativistic limit regime
National University of Singapore(新加坡国立大学);Beijing Computational Science Research Center(北京计算科学研究中心);Purdue University(普渡大学);Université de Lorraine(洛林大学);Inria Nancy-Grand Est(南锡大东部国家研究学院)
Neural Multiscale Decomposition for Solving The Nonlinear Klein-Gordon Equation with Time Oscillation
National Center for Applied Mathematics(应用数学国家研究中心);Tianjin University(天津大学);School of Mechanical and Aerospace Engineering, Jilin University(吉林大学机械与航空航天工程学院);Jilin University(吉林大学)