Lperturbation+theory

Lperturbation+theory - Coeff A nk entering the expansion of...

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Known Hamiltonian Known type of perturbation Correction to wavefunction Correction to energy
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How to get : 2 nd order
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Use 1 st order perturbation theory and compute :
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How do we get the first order correction to wavefunction? : Consider Schroedinger equation for perturbed Hamiltonian at 1 st order and insert wavefunction expression:
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Unformatted text preview: Coeff. A nk entering the expansion of ψ n have been determined Applying similar concepts we can obtain, e.g. the second order energy correction Example: Harmonic Oscillator (HO) and linear potential term Example of molecule in electric field Orthonormality of eigenstates of unperturbed Hamiltonian...
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This note was uploaded on 02/06/2011 for the course CHE 110A taught by Professor Mccurdy during the Fall '09 term at UC Davis.

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Lperturbation+theory - Coeff A nk entering the expansion of...

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