Infinite square-well potential

Click For Summary
SUMMARY

The discussion centers on calculating the lowest energy level of an electron confined in an infinite square-well potential, where the width of the well equals the position uncertainty. Participants emphasize utilizing the Heisenberg uncertainty principle to estimate the electron's momentum. The energy of the particle can be derived from the equation for a particle in a box, specifically E = (n²π²ħ²)/(2mL²), where L represents the width of the well. This approach effectively links quantum mechanics principles with practical calculations.

PREREQUISITES
  • Understanding of quantum mechanics principles, particularly the Heisenberg uncertainty principle.
  • Familiarity with the concept of infinite square-well potential.
  • Knowledge of the energy equation for a particle in a box: E = (n²π²ħ²)/(2mL²).
  • Basic skills in manipulating equations and solving for variables in physics.
NEXT STEPS
  • Study the Heisenberg uncertainty principle in detail to understand its implications in quantum mechanics.
  • Learn about the derivation and applications of the infinite square-well potential model.
  • Explore the energy quantization of particles in confined systems, focusing on different boundary conditions.
  • Investigate the relationship between momentum and energy in quantum systems, particularly for particles in potential wells.
USEFUL FOR

Students of quantum mechanics, physicists working with particle confinement, and educators teaching advanced physics concepts will benefit from this discussion.

Kurt12
Messages
1
Reaction score
0

Homework Statement


Consider an electron trapped in an infinite square-well potential. If the width of the well is equal to the position uncertainty, what would be the lowest energy level for this electron

Homework Equations


The Attempt at a Solution


I tried the equation for energy of a particle in a box but it requires the width and I don't know how to use the given fact that it is equal to the position uncertainty. Any help is greatly appreciated.
 
Physics news on Phys.org
The problem wants you to use the uncertainty principle to estimate the momentum of the particle and find its corresponding energy.
 

Similar threads

  • · Replies 14 ·
Replies
14
Views
3K
  • · Replies 19 ·
Replies
19
Views
3K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
7
Views
3K
  • · Replies 9 ·
Replies
9
Views
7K
Replies
9
Views
3K
  • · Replies 11 ·
Replies
11
Views
3K
Replies
16
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K