Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Splitting electron

  1. Apr 19, 2012 #1
  2. jcsd
  3. Apr 19, 2012 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    Er.. no.

    These "electrons" are quasiparticles, not bare electrons.

    In many-body physics, a bunch of exotic things can happen under certain circumstances. The "news" that electrons can fractionalize is not new. Luttinger Liquid theory has predicted (and been proven experimentally) that such quasiparticles can have spin-charge separation in 1D conductors. This new result is showing another "degree of freedom" in such 1D conductors - orbiton.

  4. Apr 19, 2012 #3
    Thank you. Article did not mention quasiparticle and I got confused.
  5. Apr 19, 2012 #4


    User Avatar
    Science Advisor

    It is even possible to split the electron's charge degree of freedom, and to get electronic quasi-particles with fractional charges:
    F. Pollmann and P. Fulde 2006 Europhys. Lett. 75 133

    Many body physics has some very confusing things to offer.
  6. Apr 19, 2012 #5

    Ken G

    User Avatar
    Gold Member

    Physics in less than three dimensions also introduces some strange behaviors, for example in 2D with strong magnetic fields you get "composite fermions" and the quantum Hall effect (http://en.wikipedia.org/wiki/Quantum_Hall_effect), and there are "anyons" (http://en.wikipedia.org/wiki/Anyon) that are neither bosons nor fermions. Quasiparticles are a whole new ball of wax! It reminds me of the debates we get into about virtual particles-- some say they aren't real, others say they are the only kind of particles that are real. Perhaps the same issues arise with quasiparticles, though I'm not suggesting we address that issue!
  7. Apr 20, 2012 #6
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook