Skip to main content

Theory and Modern Applications

Table 5 Comparison based on relative errors for problem ( 70 )

From: New spectral collocation algorithms for one- and two-dimensional Schrödinger equations with a Kerr law nonlinearity

N  =  M  =  K

\(\boldsymbol{\alpha}_{\boldsymbol{1}}\boldsymbol{=}\boldsymbol{\alpha}_{\boldsymbol{2}}\boldsymbol{=}\boldsymbol{\alpha}_{\boldsymbol{3}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{1}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{2}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{3}}\boldsymbol{=}\boldsymbol{0}\)

N  =  M  =  K

\(\boldsymbol{\alpha}_{\boldsymbol{1}}\boldsymbol{=}\boldsymbol{\alpha}_{\boldsymbol{2}}\boldsymbol{=}\boldsymbol{\alpha}_{\boldsymbol{3}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{1}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{2}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{3}}\boldsymbol{=}\boldsymbol{\frac{1}{2}}\)

\(\boldsymbol{R}^{\boldsymbol{u}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{v}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{\psi}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{u}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{v}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{\psi}}_{\boldsymbol{M}}\)

4

5.06 × 10−5

2.88 × 10−5

3.65 × 10−5

4

6.32 × 10−5

4.07 × 10−5

4.84 × 10−5

6

1.14 × 10−7

4.76 × 10−8

7.36 × 10−8

6

1.70 × 10−7

8.88 × 10−8

1.19 × 10−7

8

1.15 × 10−10

3.70 × 10−11

6.85 × 10−11

8

2.00 × 10−10

9.04 × 10−11

1.32 × 10−10

N  =  M  =  K

\(\boldsymbol{\alpha}_{\boldsymbol{1}}\boldsymbol{=}\boldsymbol{\alpha}_{\boldsymbol{2}}\boldsymbol{=}\boldsymbol{\alpha}_{\boldsymbol{3}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{1}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{2}}\boldsymbol{=}\boldsymbol{\beta}_{\boldsymbol{3}}\boldsymbol{=}\boldsymbol{-\frac{1}{2}}\)

( N , M , K )

Symmetric Sinc-Galerkin method [ 39 ]

\(\boldsymbol{R}^{\boldsymbol{u}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{v}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{\psi}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{u}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{v}}_{\boldsymbol{M}}\)

\(\boldsymbol{R}^{\boldsymbol{\psi}}_{\boldsymbol{M}}\)

4

3.38 × 10−5

1.34 × 10−5

2.15 × 10−5

(8,8,1,000)

1.56 × 10−5

1.40 × 10−5

2.30 × 10−5

6

6.03 × 10−8

2.41 × 10−8

3.36 × 10−8

(16,16,1,000)

4.51 × 10−7

5.04 × 10−7

6.77 × 10−7

8

4.84 × 10−11

3.51 × 10−11

3.05 × 10−11

(32,32,1,000)

2.98 × 10−9

4.90 × 10−9

5.62 × 10−9