Nonlinear Schr(o)dinger equation with a Dirac delta potential: finite difference method

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2020,（2）
• 页码范围: 1-6
• 页数: 6页
• 语种: 英文

摘要

The nonlinear Schr(o)dinger equation with a Dirac delta potential is considered in this paper.It is noted that the equation can be transformed into an equation with a drift-admitting jump.Then following the procedure proposed in Chen and Deng (2018 Phys.Rev.E 98 033302),a new second-order finite difference scheme is developed,which is justified by numerical examples.