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Quasiparticle Confusion

  1. Sep 20, 2015 #1
    I am confused as to what a quasi particle is. I know that it only occurs when a microscopic system acts in an unorthodox way, but are they truly a particle? Are they fundamental? Have they been proven? If the answer to all of these questions is yes, why are they excluded from the standard model?
     
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  3. Sep 20, 2015 #2

    Vanadium 50

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    You are confused. A quasi-particle is a description of the collective motion of many particles. This description has some features of particle motion. One simple example is the "hole". You can treat a crystal with N positions, N-1 of them filled as either an N-1 particle system, or a complete N particle crystal and a single hole. The second description is usually computationally simpler.
     
  4. Sep 20, 2015 #3

    ZapperZ

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    Try reading this, for example:

    https://www.physicsforums.com/threads/quasiparticles-of-quantum-mechanics.80512/#post-619236

    You should have posted this in the solid state physics forum. Quasiparticles of various forms are a common occurrences in this field. And yes, they have been thoroughly verified!

    Zz.
     
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