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Classical Lorentz harmonic oscillator model of photo-phonon inteaction

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hjaohuang
#1
May9-11, 11:03 PM
P: 2
Why the reciprocal of the damping rate in this model equal to the phonon lifetime? Can somebody give me a detailed exaplanation.

Thanks.
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chrisbaird
#2
May12-11, 03:25 PM
P: 617
The answer is dephasing. If there were no damping, an oscillator would go on forever. The damping rate is a characteristic rate at which the oscillation gets interrupted. In the quantum world, quantum states slowly dephase and have a lifetime describing this loss of coherence. With loss of coherence comes the destruction of the interaction, e.g. the oscillator stops oscillating.


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