15 2 0 To the given unperturbed Hamiltonian 2 5 0 0 0 2 [1 1 we add a small perturbation given by 1 -1 where & is small quantity. |1 -1 1 The ground state eigenvector of the unperturbed Hamiltonian is

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15 2 0
To the given unperturbed Hamiltonian
2 5 0
0 0 2
[1
1
we add a small perturbation given by
1
1 where & is small quantity.
-1
1
The ground state eigenvector of the unperturbed Hamiltonian is
Transcribed Image Text:15 2 0 To the given unperturbed Hamiltonian 2 5 0 0 0 2 [1 1 we add a small perturbation given by 1 1 where & is small quantity. -1 1 The ground state eigenvector of the unperturbed Hamiltonian is
A pair of eigenvalues of the perturbed Hamiltoniar , using first order perturbation theory,
Transcribed Image Text:A pair of eigenvalues of the perturbed Hamiltoniar , using first order perturbation theory,
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