Nonlinear Schrödinger equation with a Dirac delta potential: finite difference method*

Bin Cheng(程彬),Ya-Ming Chen(陈亚铭),Chuan-Fu Xu(徐传福),Da-Li Li(李大力),Xiao-Gang Deng(邓小刚)

Figure 2. Numerical results for equation (23) with g = 1 and $\lambda =-1$. Here, N1 = N2 = 200. (a) Numerical solution; (b) residue.