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For a particle, the unperturbed states are with the allowed (dimensionless) energies
= 0, +1, +2, .... If we introduce the perturbation Hamiltonian Â' such
of n², where n =
that:
0.5
0.2
0 for k=1 and g = -1
for k=g = 0
0.3
) Find the (dimensionless) first order correction to the ground state energy
for k= g = 1
for k=g = −1
(Y|A|) =

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