Classical Mechanics vs Quantum Mechanics

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SUMMARY

The discussion highlights the distinction between classical mechanics and quantum mechanics, specifically regarding the force constant in the damped simple harmonic equation versus the classical harmonic oscillator potential in the Schrödinger equation. While the force constant can assume any value in classical mechanics, the energy eigenvalues of the quantum harmonic oscillator Hamiltonian are quantized, resulting in discrete eigenvalues. This fundamental difference underscores the transition from classical to quantum physics and the implications for energy states.

PREREQUISITES
  • Understanding of classical mechanics principles, particularly harmonic motion.
  • Familiarity with quantum mechanics concepts, especially the Schrödinger equation.
  • Knowledge of eigenvalues and eigenstates in quantum systems.
  • Basic grasp of Hamiltonian mechanics and its applications.
NEXT STEPS
  • Study the derivation of the Schrödinger equation for the quantum harmonic oscillator.
  • Explore the concept of quantization in quantum mechanics.
  • Learn about the implications of discrete energy levels in quantum systems.
  • Investigate the differences between damped and undamped harmonic oscillators in classical mechanics.
USEFUL FOR

Physics students, educators, and researchers interested in the foundational differences between classical and quantum mechanics, particularly in the context of harmonic oscillators.

Ishida52134
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Why is it that in the damped simple harmonic equation, the force constant can take on all values, but the force constant corresponding to the classical harmonic oscillator potential in the Schrödinger equation can only take on discrete eigenvalues?
 
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Ishida52134 said:
the force constant corresponding to the classical harmonic oscillator potential in the Schrödinger equation can only take on discrete eigenvalues

The force constant can be anything you want. The *energy* eigenvalues of the harmonic oscillator Hamiltonian are discrete.
 

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