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  5. Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)
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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/16970
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dc.contributor.authorAnastasopoulos, P.en
dc.contributor.authorLeontaris, G. K.en
dc.contributor.authorRichter, R.en
dc.contributor.authorSchellekens, A. N.en
dc.date.accessioned2015-11-24T18:34:35Z-
dc.date.available2015-11-24T18:34:35Z-
dc.identifier.issn1126-6708-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/16970-
dc.rightsDefault Licence-
dc.subjectintersecting branes modelsen
dc.subjectd-branesen
dc.subjectsuperstring vacuaen
dc.subjectstandard model spectraen
dc.subjectgrand unified modelsen
dc.subjecti string vacuaen
dc.subjectflipped su(5)en
dc.subjectintersecting d6-branesen
dc.subjectanomalous u(1)sen
dc.subjectneutrino massesen
dc.subjectsu(n) holonomyen
dc.subjectgepner modelsen
dc.subjectorientifoldsen
dc.titleSU(5) D-brane realizations, Yukawa couplings and proton stabilityen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDoi 10.1007/Jhep12(2010)011-
heal.identifier.secondary<Go to ISI>://000285964400035-
heal.identifier.secondaryhttp://www.springerlink.com/content/9r06p72675325611/fulltext.pdf-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.publicationDate2010-
heal.abstractWe discuss SU(5) Grand Unified Theories in the context of orientifold compactifications. Specifically, we investigate two and three D-brane stack realizations of the Georgi-Glashow and the flipped SU(5) model and analyze them with respect to their Yukawa couplings. As pointed out in [1] the most economical Georgi-Glashow realization based on two stacks generically suffers from a disastrous large proton decay rate. We show that allowing for an additional U(1) D-brane stack this as well as other phenomenological problems can be resolved. We exemplify with globally consistent Georgi-Glashow models based on RCFT that these D-brane quivers can be indeed embedded in a global setting. These globally consistent realizations admit rigid O(1) instantons inducing the perturbatively missing coupling 10105(H). Finally we show that flipped SU(5) D-brane realizations even with multiple U(1) D-brane stacks are plagued by severe phenomenological drawbacks which generically cannot be overcome.en
heal.journalNameJournal of High Energy Physicsen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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