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Flipped Su(5)The Flipped SU(5) model is a GUT theory which states that the gauge group is href="/encyclopedia/Special-unitary-group" title="Special unitary group">SU(5) × U(1) / and the fermions form three families, each consisting of the representations , 10-1 and 1-5. This includes right-handed neutrinos, which are known to exist because of observed neutrino oscillations. There is also an adjoint scalar field, a 10-1 and/or called the Higgs field which acquires a VEV. This results in a spontaneous symmetry breaking from -
to -
and also, - , , , . See restricted representation.
Of course, calling the representations things like and 240 is purely a physicist's convention, not a mathematician's convention, where representations are either labelled by Young tableaux or Dynkin diagrams with numbers on their vertices, but still, it is standard among GUT theorists. Since the homotopy group -
this model does not predicts monopoles. See Hooft-Polyakov monopole. To do: - This theory was invented by ???.
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