Calculate Rayleigh - Schrodinger perturbation series for the quartic anharmonic oscillator

Hamiltonian of the quartic anharmonic oscillator has the form:
H = p²/2 + x²/2 + g x⁴, where g is a small perturbation parameter.

The energy is expanded in powers of g:
E(g) = E₀ + E₁ g + ... + E_N g^N, where
      E₀ = n + 1/2 is unperturbed harmonic-oscillator energy,
      n is the harmonic oscillator quantum number, and
      N is the order of perturbation theory.

Download text of the Mathematica program used for this calculation

600 coefficients of the expansion for n=0, n=1, and n=2 calculated earlier.

Directory of Sergeev's files Designed by A. Sergeev

Сайт создан в системе uCoz

Enter the oscillator quantum number	n =	n = 0 for the ground state, 1,2,3,... for excited states.
Enter the order of perturbation theory	N =	N = 1,2,3,...