Chiral D-brane Models with Frozen Open String Moduli

By Ralph Blumenhagen, M. Cvetič, F. Marchesano, Gary Shiu. 2005

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Most intersecting D-brane vacua in the literature contain additional massless adjoint fields in their low energy spectrum. The existence of these additional fields make it difficult to obtain negative beta functions and, eventually, asymptotic freedom. We address this important issue for = 1 intersecting D-brane models, rephrasing the problems in terms of (open string) moduli stabilization. In particular, we consider a 2 × 2 orientifold construction where D6-branes wrap rigid 3-cycles and such extra adjoint fields do not arise. We derive the model building rules and consistency conditions for intersecting branes in this background, and provide = 1 chiral vacua free of adjoint fields. More precisely, we construct a Pati-Salam-like model whose SU(4) gauge group is asymptotically free. We also comment on the application of these results for obtaining gaugino condensation in chiral D-brane models. Finally, we embed our constructions in the framework of flux compactification, and construct new classes of = 1 and = 0 chiral flux vacua.

Subfields: Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/e8d6f44769f688a642b9a8ff5d14d1316d5fe2ea

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Citations in the corpus

Fixing all moduli in a simple f-theory compactification (2005, background): “In addition, close relatives of this model (which exist at different discrete choices of the B-field in the orbifold singularities) have played an important role in constructions of semi-realistic particle physics models [19, 20, 27, 30, 44, 76, 78], and such constructions may also be possible in si”
Flux compactifications in string theory: A Comprehensive review (2005, background): “There has been a lot of very recent progress in understanding the open and M-theory landscapes [32], open moduli stabilization by open and closed string fluxes [33, 34, 35] and moduli stabilization in M-theory [20, 36, 37], which is worth a review by itself.”
Type IIA Moduli Stabilization (2005, background): “There has also been great progress in constructing realistic brane world models in flux backgrounds [39] and in using the fluxes to freeze the open string moduli [40, 41] and induce soft supersymmetry breaking terms [42]; it would be interesting to combine these ingredients in the setting suggested ”
Spacetime instanton corrections in 4D string vacua: The Seesaw mechanism for D-Brane models (2006, background): “we require these uncharged zero modes to be absent. In particular, this means that the sLag cycle Ξ needs to be rigid. The construction of such rigid cycles in toroidal orbifolds has been explored in [30,31]. In view of the discussion of the previous section, one might suspect that the formal U(1)a ”
Fluxes, moduli fixing and MSSM-like vacua in a simple IIA orientifold (2005, background): “Additional ways to stabilize open string moduli in toroidal models have been recently described in [53].”
One in a Billion: MSSM-like D-Brane Statistics (2005, unknown): “[37–41] among many others).”
Four-dimensional string compactifications with D-branes, orientifolds and fluxes (2006, methodology): “Flux compactifications on the mirror symmetric Calabi-Yau given by the orbifold with discrete torsion were also considered [242].”