Numerical 2D Harmonic Oscillator

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SUMMARY

The discussion focuses on numerically solving the 2D harmonic oscillator using the equation -\frac{1}{2}\left(u_{xx} + u_{yy}\right) + \frac{1}{2}(x^2+y^2)u = Eu. The solver produces solutions in the form |u\rangle = \alpha_1 |01\rangle + \alpha_2 |10\rangle, which are valid but not in the desired pure Gauss-Hermite form. A participant suggests breaking the degeneracy by selecting different frequencies in the x and y directions to achieve the desired solutions.

PREREQUISITES
  • Understanding of quantum mechanics and harmonic oscillators
  • Familiarity with numerical methods for solving differential equations
  • Knowledge of linear algebra, particularly eigenvalues and eigenvectors
  • Experience with computational tools for numerical simulations
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  • Research methods for generating Gauss-Hermite functions in numerical solvers
  • Explore techniques for breaking degeneracy in quantum systems
  • Learn about the implementation of numerical solvers for partial differential equations
  • Investigate the impact of frequency variations on quantum harmonic oscillators
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Quantum physicists, computational scientists, and anyone involved in numerical simulations of quantum systems will benefit from this discussion.

JohnSimpson
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I'm solving the 2D harmonic oscillator, numerically.

[tex] -\frac{1}{2}\left(<br /> u_{xx} + u_{yy}\right) + \frac{1}{2}(x^2+y^2)u = Eu[/tex]

The solutions my solver spits out for say, the |01> state, are linear combinations of the form

[tex] |u\rangle = \alpha_1 |01\rangle + \alpha_2 |10\rangle[/tex]

which is obviously a perfectly fine solution which has the correct eigenvalue. But I'd like for my solver to somehow be "smart" enough to generate the typically defined pure gauss-hermite solutions, automatically. Is there any way to force this?

-js
 
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I decided just to break the degeneracy by choosing different frequencies in the different directions. Nevermind!
 

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