|
Flipped SO(10)
Flipped SO(10) is a grand unified theory which is to standard SO(10) (physics), SO(10) as flipped SU(5), flipped SU(5) is to Georgi–Glashow, SU(5). Details In conventional SO(10) models, the fermions lie in three spinorial 16 representations, one for each generation, which decomposes under [SU(5) × U(1)χ]/Z5 as :16 \rightarrow 10_1 \oplus \bar_ \oplus 1_5 This can either be the Georgi–Glashow SU(5) or flipped SU(5). In flipped SO(10) models, however, the gauge group is not just SO(10) but SO(10)F × U(1)B or [SO(10)F × U(1)B]/Z4. The fermion fields are now three copies of :16_1\oplus 10_ \oplus 1_4 These contain the Standard Model fermions as well as additional vector fermions with GUT scale masses. If we suppose [SU(5) × U(1)A]/Z5 is a subgroup of SO(10)F, then we have the intermediate scale symmetry breaking [SO(10)F × U(1)B]/Z4 → [SU(5) × U(1)χ]/Z5 where :\chi=-+ In that case, :\begin 16_1&\rightarrow 10_1 \oplus \bar_2 \oplus 1_0 \\ 10_&\rightarrow 5_ \oplus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Unified Theory
A Grand Unified Theory (GUT) is any Mathematical model, model in particle physics that merges the electromagnetism, electromagnetic, weak interaction, weak, and strong interaction, strong fundamental interaction, forces (the three gauge theory, gauge interactions of the Standard Model) into a single force at high energy, energies. Although this Unification (physics), unified force has not been directly observed, many GUT models theorize its existence. If the unification of these three interactions is possible, it raises the possibility that there was a grand unification epoch in the Chronology of the universe#Very early universe, very early universe in which these three fundamental interactions were not yet distinct. Experiments have confirmed that at high energy, the electromagnetic interaction and weak interaction unify into a single combined electroweak interaction. GUT models predict that at even grand unification energy, higher energy, the strong and electroweak interaction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
