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Lorentz resonance number and number of poles for Lorentz model

  1. Jul 10, 2013 #1
    Hi all
    Here, I attached a figure presenting the Lorentz-Drude function. The resonance number is clear from the m in the equation. But I like to know if the number of poles in Lorentz model is the same as the number of resonance or not. I am confused. I would be very grateful if you can help me.

    Attached Files:

  2. jcsd
  3. Jul 10, 2013 #2

    Jano L.

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    Gold Member

    The number of poles is the number of distinct ##\omega## (from complex plane) for which the permitivity diverges. If the divergence occurs, it has to be due to some denominator being zero. Try to count the number of different possibilities.
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