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posted by janrinok on Monday July 27 2015, @03:07PM   Printer-friendly
from the weyl,-whale,-while? dept.

Several places have been mentioning new findings about massless, charge carrying Weyl fermion particles:

So what exactly is a Weyl fermion? Although we're often taught in high school science that the Universe is made up of atoms, from a particle physics point of view, everything is actually made up of fermions and bosons. Put very simply, fermions are the building blocks that make up all matter, such as electrons, and bosons are the things that carry force, such as photons.

Electrons are the backbone of today's electronics, and while they carry charge pretty well, they also have the tendency to bounce into each other and scatter, losing energy and producing heat. But back in 1929, a German physicist called Hermann Weyl theorised that a massless fermion must exist, that could carry charge far more efficiently than regular electrons.

And now the team at Princeton has shown that they do indeed exist. In fact, they've shown that in a test medium, Weyl electrons can carry charge at least 1,000 times faster than electrons in ordinary semiconductors, and twice as fast as inside wonder-material graphene.

Most notably, it might we be possible to build better ways to produce them en masse for further study. The strange monopole arrangement they express is still puzzling scientists, but applications may abound:

What's particularly cool about the discovery is that the researchers found the Weyl fermion in a synthetic crystal in the lab, unlike most other particle discoveries, such as the famous Higgs boson, which are only observed in the aftermath of particle collisions. This means that the research is easily reproducible, and scientists will be able to immediately begin figuring out how to use the Weyl fermion in electronics.


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  • (Score: 2) by FatPhil on Monday July 27 2015, @04:09PM

    by FatPhil (863) <{pc-soylent} {at} {asdf.fi}> on Monday July 27 2015, @04:09PM (#214378) Homepage
    "Fermions include all quarks and leptons, as well as any composite particle made of an odd number of these"
    "Dirac fermions can be treated as a combination of two Weyl fermions."

    So an even number of fermions can make a fermion, but it takes an odd number of fermions to make a fermion?

    Parity Error!
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  • (Score: 2, Informative) by Post-Nihilist on Monday July 27 2015, @05:00PM

    by Post-Nihilist (5672) on Monday July 27 2015, @05:00PM (#214407)

    Odd (quarks + leptons) - > fermions
    Even Dirac fermions->quasi Weyl fermions

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