The Standard Model from stable intersecting brane world orbifolds

By Ralph Blumenhagen, B. Kors, D. Lust, T. Ott. 2001

294 citations recorded by the source corpus.

Abstract We analyze the perturbative stability of non-supersymmetric intersecting brane world models on tori. Besides the dilaton tadpole, a dynamical instability in the complex structure moduli space occurs at string disc level, which drives the background geometry to a degenerate limit. We show that in certain orbifold models this latter instability is absent as the relevant moduli are frozen. We construct explicit examples of such orbifold intersecting brane world models and discuss the phenomenological implications of a three generation Standard Model which descends naturally from an SU (5) GUT theory. It turns out that various phenomenological issues require the string scale to be at least of the order of the GUT scale. As a major difference compared to the Standard Model, some of the Yukawa couplings are excluded so that the standard electroweak Higgs mechanism with a fundamental Higgs scalar is not realized in this set-up.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ec59198618daabb6315b6f759bafc67d79535665

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Citations in the corpus

D-terms and F-terms from D7-brane fluxes (2005, background): “ in such a way that the conditions (2.21) are fulﬁlled. In addition to RR tadpoles there can also appear NS-NS tadpoles. The divergencies of NS-NS tadpoles give rise to potentials for the NS-NS ﬁelds [55, 56] and can be absorbed in the background ﬁelds via the Fischler-Susskind mechanism [57]. In th”
GUTs in Type IIB Orientifold Compactifications (2008, methodology): “At least locally, each such field can be identified with an element of an appropriate bundle valued cohomology group on the internal mani- 10 fold and the cycles wrapped by the D-branes.”
Orientifolds, hypercharge embeddings and the Standard Model (2006, background): “For other work discussing aspects of (flipped) SU(5) model building along similar lines, see [35][36] [37],[33][38][34].”
SUSY breaking in local string/F-theory models (2009, background): “First of all, it was realised that some of the model building problems one had with realising simple GUT groups in orientifold constructions [10] are nicely reconciled in F-theory models on elliptically fibered Calabi-Yau fourfolds [11–18].”
Proton stability in grand unified theories, in strings and in branes (2006, background): “An interesting class of models are those based on intersecting D branes [355, 356, 357, 358, 359] and attempts have been made to build semi-realistic models based on these [360, 361, 362, 363, 364, 365], and issues of gauge coupling unification, soft breaking and possible applications to the real wo”
Computing Yukawa couplings from magnetized extra dimensions (2004, unknown): “[4, 6, 18, 19, 20, 21, 22, 23, 24] admit a description in terms of the picture given in the present paper.”
Orientifolds of K3 and Calabi-Yau manifolds with intersecting D-branes (2002, unknown): “Keywords: Superstring Vacua, D-branes, Supersymmetry Breaking. c© SISSA/ISAS 2002 http://jhep.sissa.it/archive/papers/jhep072002026/jhep072002026.pdf J H E P 0 7 ( 2 0 0 2 ) 0 2 6 Contents”
Standard Model at Intersecting D5-branes: Lowering the String Scale (2002, unknown): “Unlike the D6-brane case, the present class of models has N = 0 SUSY both in the bulk and on the branes and hence the spectrum is simpler.”
Supersymmetric Intersecting Branes on the Type IIA T6/Bbb Z4 Orientifold (2002, unknown): “11/2002”
Intersecting Brane Models of Particle Physics and the Higgs Mechanism (2002, background): “Explicit D-brane models with realistic three-generation particle spectrum lying at intersecting branes have been constructed in the last couple of years [8, 9, 10, 11, 12, 13, 14, 15, 16, 17].”
The statistics of supersymmetric D-brane models (2004, background): “It is known that these intersecting D-brane models are constrained by only fairly moderate consistency conditions [27,28,29], which still allow for a large number of solutions.”