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Edit to: GUT by Urs Schreiber at 2018-04-01 01:21:13 UTC.
Author comments:
added pointer to textbook account
expanded the Idea-section with some lines on the algebraic motivation for $SU(5)$- and $Spin(10)$-GUTs, with specific pointers to page and verse in Baez-Huerta 09 for details.
in the process I introduced sub-sections to the Idea-section and re-shuffled the previous material just slightly, for better logical flow.
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Claim that threshold corrections can considerably alter (decrease) proton decay rate predictions in non-supersymmetric GUTs:
added pointer to today’s
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Mainak Chakraborty, M.K. Parida, Biswonath Sahoo, Triplet Leptogenesis, Type-II Seesaw Dominance, Intrinsic Dark Matter, Vacuum Stability and Proton Decay in Minimal SO(10) Breakings (arXiv:1906.05601)
Results indicating non-SUSY $SO(10)$ as self sufficient theory for neutrino masses, baryon asymmetry, dark matter, vacuum stability of SM scalar potential, origin of three gauge forces, and observed proton stability.
added also pointer to
review:
and added a graphics from these slides to the entry
added pointer to today’s
have added pointes on “SO(16)”-GUT (here), such as these:
Frank Wilczek, Anthony Zee, Families from spinors, Phys. Rev. D 25, 553 (1982) (doi:10.1103/PhysRevD.25.55310.1103/PhysRevD.25.553)
Goran Senjanović, Frank Wilczek, Anthony Zee, Reflections on mirror fermions, Physics Letters B Volume 141, Issues 5–6, 5 July 1984, Pages 389-394 Physics Letters B (doi:10.1016/0370-2693(84)90269-7)
in the section on “SO(10)-GUT” I have added this:
The exact gauge group of the standard model of particle physics (see there) is isomorphic to the subgroup of Spin(9) $\subset$ Spin(10) which respects a splitting $\mathbb{H} \oplus \mathbb{H} \simeq_{\mathbb{R}} \mathbb{C} \oplus \mathbb{C}^3$ (Spin(9)#Krasnov 19).
added the original reference intorducing “SO(10)”-GUT:
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