Gravitational GUT Breaking and the GUT-Planck Hierarchy

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dc.creatorUrano, S.
dc.creatorRing, D.
dc.creatorArnowitt, R.
dc.date1995-12-11
dc.date.accessioned2026-07-07T11:47:44Z
dc.date.available2026-07-07T11:47:44Z
dc.descriptionIt is shown that non-renormalizable gravitational interactions in the Higgs sector of supersymmetric grand unified theories (GUT's) can produce the breaking of the unifying gauge group $G$ at the GUT scale $M_{\rm GUT} \sim 10^{16}$~GeV. Such a breaking offers an attractive alternative to the traditional method where the superheavy GUT scale mass parameters are added ad hoc into the theory. The mechanism also offers a natural explanation for the closeness of the GUT breaking scale to the Planck scale. A study of the minimal SU(5) model endowed with this mechanism is presented and shown to be phenomenologically viable. A second model is examined where the Higgs doublets are kept naturally light as Goldstone modes. This latter model also achieves breaking of $G$ at $M_{\rm GUT}$ but cannot easily satisfy the current experimental proton decay bound.
dc.description11 pages, REVTeX, 1 figure included as an uuencoded Z-compressed PostScript file. Our Web page at http://physics.tamu.edu/~urano/research/gutplanck.html contains ready to print PostScript version (with figures) as well as color version of plots
dc.identifierhttps://arxiv.org/abs/hep-ph/9512268
dc.identifierhttp://arxiv.org/abs/hep-ph/9512268
dc.identifierPhys.Rev.Lett.76:3663-3666,1996
dc.identifierdoi:10.1103/PhysRevLett.76.3663
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202679
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGravitational GUT Breaking and the GUT-Planck Hierarchy
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