
Mathematica programs for this calculation
600 coefficients for
n=0,
n=1, and
n=2
for the quartic anharmonic oscillator
V(x) = x^{2}/2 + x^{4}
calculated earlier.
1000 coefficients for
n=0,
n=1, and
n=2
for the quartic anharmonic oscillator, in gzipformat.
435 coefficients of the groundstate energy expansion for the sextic anharmonic oscillator V(x) = x^{2}/2 + x^{6} calculated earlier. Only nonzero coefficients E_{1}, E_{3}, E_{5}, ... are listed there.
350 coefficients of the groundstate energy expansion for the octic anharmonic oscillator V(x) = x^{2}/2 + x^{8} calculated earlier. Only nonzero coefficients E_{1}, E_{4}, E_{7}, ... are listed there.
380 coefficients of the groundstate energy expansion for the cubic anharmonic oscillator V(x) = x^{2}/2 + x^{3} calculated earlier.
251 coefficients of the groundstate energy expansion for the Mathieu potential V(x) = cos x calculated earlier.
Online calculation of Rayleigh  Schrödinger perturbation series
Designed by A. Sergeev