刚性朗之万系统的保结构随机脉冲方法:位置具有1阶或1/2阶一致全局误差
Structure preserving Stochastic Impulse Methods for stiff Langevin systems with a uniform global error of order 1 or 1/2 on position
AI总结:
针对具有二次刚性势和任意软势的朗之万系统,提出一类显式保结构(准辛)的脉冲积分器,在粗步长下实现位置的一致误差界。
摘要:
脉冲方法被推广到一类积分器,用于具有二次刚性势和任意软势的朗之万系统。在积分位置上获得了统一误差界(与刚性参数无关),允许使用粗积分步长。得到的积分器是显式的且保结构(对朗之万系统为准辛的)。
英文摘要:
Impulse methods are generalized to a family of integrators for Langevin systems with quadratic stiff potentials and arbitrary soft potentials. Uniform error bounds (independent from stiff parameters) are obtained on integrated positions allowing for coarse integration steps. The resulting integrators are explicit and structure preserving (quasi-symplectic for Langevin systems).
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。