Sketching ψ(x) for 1-D TISE in Ground State: Potential, Energy, and Behavior

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SUMMARY

The discussion focuses on sketching the wave function ψ(x) for a one-dimensional time-independent Schrödinger equation (TISE) in the ground state of a particle subjected to a potential V0. The key equation is ψ'' + (2m(E-V0)/ħ²)ψ = 0, which governs the behavior of the wave function. For energy levels E greater than V0, the wave function approaches the x-axis, while for E less than V0, it rises from the x-axis. The final sketch must reflect that the wave function approaches zero at both ends, indicating the particle's confinement within the potential wells.

PREREQUISITES
  • Understanding of quantum mechanics, specifically the time-independent Schrödinger equation (TISE).
  • Familiarity with concepts of potential energy and ground state energy levels.
  • Knowledge of wave function behavior in quantum systems.
  • Basic calculus, particularly second derivatives and their implications in physics.
NEXT STEPS
  • Study the implications of the time-independent Schrödinger equation in various potential wells.
  • Learn about the graphical representation of wave functions in quantum mechanics.
  • Explore the concept of normalization of wave functions in quantum states.
  • Investigate the differences in wave function behavior for bound versus unbound states.
USEFUL FOR

Students of quantum mechanics, physicists analyzing potential wells, and educators teaching the principles of wave functions and energy states in quantum systems.

Caulfield
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Homework Statement



Particle moves in one dimension in the potential shown here. The energy E is shown on the graph and the particle is in its ground state.
Sketch ψ(x)

Homework Equations



ψ''+2m(E-V0)/ħ^2 ψ=0

The Attempt at a Solution



For E>V0: The graph of ψ goes toward x axis, ψ and ψ'' have opposite signs.

For E<V0: The graph of ψ goes from x axis, ψ and ψ'' have the same signs.

The graph must end up going towards the zero on both ends.
 
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You can do it for each well separately right?
It's just a sketch - you you don't need to be exact - so just sum what you get for each one apart.
 

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