What Are the Eigenstates and Energies of the Quantum Harmonic Oscillator?

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Homework Help Overview

The discussion revolves around determining the eigenstates and energies of a quantum harmonic oscillator described by a specific Hamiltonian. The problem is situated within the context of quantum mechanics, particularly focusing on the mathematical formulation of eigenstates and eigenvalues.

Discussion Character

  • Conceptual clarification, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • Participants explore the definition of eigenstates and energies, with initial attempts to express the eigenstate in terms of wave functions. There is a consideration of the dimensionality of the problem, noting the three-dimensional nature of the wave function.

Discussion Status

Some participants have provided insights into the structure of the problem, suggesting the conversion of variables to spherical coordinates and drawing parallels to similar quantum systems. Multiple interpretations of eigenstates are being explored, but there is no explicit consensus on the approach to take.

Contextual Notes

Participants are navigating the complexities of the Hamiltonian in three dimensions and are considering the implications of angular momentum in the context of the problem. There is an acknowledgment of the transition from two-dimensional to three-dimensional considerations.

atomicpedals
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Homework Statement



Consider the Hamiltonian

[tex]H=\frac{p^2}{2M}+\frac{1}{2}\omega^2r^2-\omega_z L_z[/tex]

Determine its eigenstates and energies.

2. The attempt at a solution

I want to check my comprehension; by eigenstate they mean

[tex]\psi(r)[/tex]
from the good old

[tex]H\psi(r)=E\psi(r)[/tex]
and then the energies would then be solutions for E?
 
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To sort of answer my own question the eigenstates would more properly probably be
[tex]|\psi>[/tex]
in
[tex]H|\psi>=E|\psi>[/tex]
 
It's a three-dimensional problem, so the wave function will be a function of r, θ, and φ.
 
Ah, right. (and just as I was getting comfortable in 2D)
 
Convert L_z and p to spherical coordinates and separate variables just like in the H-atom case, or the isotropic 3D oscillator.
 

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