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Classical Lorentz harmonic oscillator model of photophonon inteaction 
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#1
May911, 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. 


#2
May1211, 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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