Potential Step and Wave Functions

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SUMMARY

The discussion centers on the analysis of potential step and wave functions in quantum mechanics, specifically using the Schrödinger equation. The wave functions are defined for different regions: for x > b, Ψ(x) = Ae-ikx + Beikx; for a < x < b, Ψ(x) = Ce-ik'x + Deik'x; and for 0 < x < a, Ψ(x) = F sin(k''x). The participants confirm that the wave function should be multiplied by exp(-iωt) to represent a standing wave, where ω = E/ħ. This clarification is crucial for correctly solving the problem using quantum mechanics principles.

PREREQUISITES
  • Understanding of the Schrödinger equation
  • Familiarity with wave functions and their properties
  • Knowledge of quantum mechanics concepts such as potential wells and barriers
  • Basic proficiency in complex numbers and exponential functions
NEXT STEPS
  • Study the derivation of the Schrödinger equation in one dimension
  • Learn about boundary conditions in quantum mechanics
  • Explore the concept of standing waves in quantum systems
  • Investigate the implications of potential barriers on wave function behavior
USEFUL FOR

Students and professionals in physics, particularly those focusing on quantum mechanics, wave function analysis, and potential energy problems. This discussion is beneficial for anyone seeking to deepen their understanding of wave behavior in quantum systems.

DunceMoin
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Homework Statement

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Homework Equations

The Attempt at a Solution



For x>b, Ψ(x) = Ae-ikx + Beikx , where k = (√2mE)/hbar
a<x<b Ψ(x) = Ce-ik'x + Deik'x , where k = (√2m(U2 - E)/hbar

This is the problem part
0<x<a Ψ(x) = Fsink''x , where k = (√2m(E+U1)/hbar
I think this should be a standing wave, but am not sure if I am correct or not as I've never encountered a question like this before.

x<0 Ψ(x) = 0
 
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I think you solution is correct. As concerns the standing wave, note that the spatial wave function should be multiplied by exp(-iwt) with w=E/hbar in order to get the solution to the Shrodinger equation. This will give you a standing wave.
 

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