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Massless Fermions?

  1. Jul 24, 2014 #1

    referframe

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    Gold Member

    Does modern physics allow for the existence of massless fermions?
     
  2. jcsd
  3. Jul 24, 2014 #2

    PeterDonis

    Staff: Mentor

    Sure. In the Standard Model, all the fundamental fermions are massless; they only acquire mass through their interaction with the Higgs boson.
     
  4. Jul 24, 2014 #3

    atyy

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    Science Advisor

    In graphene, there are emergent particles at low energies whose behaviour is well described by a theory of massless fermions. http://arxiv.org/abs/cond-mat/0509330
     
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