From: An efficient spectral collocation algorithm for nonlinear Phi-four equations
N
α
β
M E
4
0
1.02 × 10−4
8
7.52 × 10−10
12
2.96 × 10−10
1 2
1.67 × 10−4
1.40 × 10−9
3.00 × 10−10
− 1 2
6.67 × 10−5
2.84 × 10−10