Consider a spin-1 particle with Hamiltonian Ĥ = AS² + B(Ŝ² − S²). Assume B < A, treat the second term as a perturbation, and calculate the unperturbed energies and their first-order corrections using perturbation theory. Be careful of the degen- eracy. Compare your perturbative results with the exact eigenvalues.
Consider a spin-1 particle with Hamiltonian Ĥ = AS² + B(Ŝ² − S²). Assume B < A, treat the second term as a perturbation, and calculate the unperturbed energies and their first-order corrections using perturbation theory. Be careful of the degen- eracy. Compare your perturbative results with the exact eigenvalues.
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Transcribed Image Text:Consider a spin-1 particle with Hamiltonian
Ĥ = AS² + B(S² − S²).
Assume B < A, treat the second term as a perturbation, and calculate the unperturbed
energies and their first-order corrections using perturbation theory. Be careful of the degen-
eracy. Compare your perturbative results with the exact eigenvalues.
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