Harmonic Oscillator: Energy Explained

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SUMMARY

The energy of a harmonic oscillator is expressed as \(E_{n} = \hbar \omega (n + \frac{1}{2})\) in quantum mechanics to simplify equations by eliminating the appearance of \(2\pi\). The use of \(\hbar\) (reduced Planck's constant) instead of \(h\) (Planck's constant) is a standard convention in quantum mechanics, as it directly relates angular frequency (\(\omega\)) to energy. This notation streamlines calculations and is widely accepted in the field.

PREREQUISITES
  • Understanding of quantum mechanics principles
  • Familiarity with harmonic oscillators in physics
  • Knowledge of Planck's constant and its significance
  • Basic grasp of angular frequency and its relation to energy
NEXT STEPS
  • Study the derivation of the harmonic oscillator energy levels in quantum mechanics
  • Learn about the implications of using \(\hbar\) versus \(h\) in quantum equations
  • Explore the relationship between angular frequency and energy in quantum systems
  • Investigate other quantum mechanical systems where similar conventions are applied
USEFUL FOR

Students and professionals in physics, particularly those focusing on quantum mechanics and harmonic oscillators, will benefit from this discussion.

Abigale
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Hi guys,

is there a reason why the energy of the harmonic oscillator is always written as:$$
E_{n} = \hbar \omega (n + \frac{1}{2})$$
instead of :
$$
E_{n} = h \nu (n + \frac{1}{2})$$
?


THX
Abby
 
Physics news on Phys.org
It means the same, usually QM uses hbar to avoid the 2pi appearing everywhere.
 

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