Solving the Schrödinger Equation: Need Help!

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SUMMARY

The discussion focuses on solving the Schrödinger Equation, specifically addressing the linearity of the eigenfunction equation \(\hat H \psi_n = E_n \psi_n\) in one dimension, where \(\hat H = \frac{\hbar^2}{2 m}\frac{\partial^2}{\partial x^2} + V(x)\). Participants clarify that adding energy levels does not yield a valid solution, emphasizing the importance of superposition in quantum mechanics. The correct approach involves substituting proposed solutions into the Schrödinger Equation to verify equality on both sides.

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  • Understanding of quantum mechanics principles
  • Familiarity with the Schrödinger Equation
  • Knowledge of linear algebra and eigenfunctions
  • Basic calculus for differential equations
NEXT STEPS
  • Study the concept of superposition in quantum mechanics
  • Learn how to apply boundary conditions to the Schrödinger Equation
  • Explore the implications of eigenvalues and eigenfunctions in quantum systems
  • Investigate potential energy functions V(x) and their effects on solutions
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Students of quantum mechanics, physicists working with wave functions, and anyone seeking to deepen their understanding of the Schrödinger Equation and its applications in quantum systems.

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Homework Statement



Hey guys.

I have this problem:

http://img32.imageshack.us/img32/1561/78854429.jpg

For the first part, I believe that adding those solution is just like adding the two levels of energy they represents and that's way this is not a solution for the equation, I think.

For the second part, I have no idea.
Can I please have some help?

Thanks.


Homework Equations





The Attempt at a Solution

 
Last edited by a moderator:
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When in doubt, return to the mathematical expression for the Schrödinger's equation.

Schrödinger's equation is \hat H \psi_n = E_n \psi_n.

In 1D,
\hat H = \frac{\hbar^2}{2 m}\frac{\partial^2}{\partial x^2} + V(x)

As this eigenfunction equation is linear, having the Hamiltonian \hat H act on a superposition of eigenfunctions \psi_n givens a superposition of \psi_n and their corresponding energies.

A similar principle holds for the next part.
 
Just plug the proposed solution into the Schrödinger's equation and show that it satisfies the equation (both sides are equal).
 

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