Building MSSM flux vacua

By F. Marchesano, Gary Shiu. 2004

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We construct N=1 and N=0 chiral four-dimensional vacua of flux compactification in Type IIB string theory. These vacua have the common features that they are free of tadpole instabilities (both NSNS and RR) even for models with N=0 supersymmetry. In addition, the dilaton/complex structure moduli are stabilised and the supergravity background metric is warped. We present an example in which the low energy spectrum contains the MSSM spectrum with three generations of chiral matter. In the N=0 models, the background fluxes which stabilise the moduli also induce soft supersymmetry breaking terms in the gauge and chiral sectors of the theory, while satisfying the equation of motion. We also discuss some phenomenological features of these three generation MSSM flux vacua. Our techniques apply to other closed string backgrounds as well and, in fact, also allow to find new N=1 D-brane models which were believed not to exist. Finally, we discuss in detail the consistency conditions of these flux compactifications. Cancellation of K-theory charges puts additional constraints on the consistency of the models, which render some chiral D-brane models in the literature inconsistent.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/35d1dffb2b4385a22800e3dcd933dd6f05c9bd78

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Citations in the corpus

Four-dimensional string compactifications with D-branes, orientifolds and fluxes (2006, background): “However this is too naive, namely in [450, 452] it was shown that there exist supersymmetric branes which give the ”wrong” sign in one of the four tadpole cancellation conditions.”
D-brane Deconstructions in IIB Orientifolds (2008, background): “• Slow roll inflation can be accommodated, at least in fine tuned local models [10, 11, 12, 13].”
The statistics of supersymmetric D-brane models (2004, methodology): “singularities and branes with non-trivial gauge fluxes have been proposed [31, 32 ].”
Chiral D-brane Models with Frozen Open String Moduli (2005, methodology): “However, such vacua do exist, as was shown in [38] by explicitly building simple”
Large-volume flux compactifications: Moduli spectrum and D3/D7 soft supersymmetry breaking (2005, background): “It would be interesting to explicitly combine our results with realistic models such as in [55, 56, 57, 58, 59] and to explore further the phenomenology of the different scenarios defined by the value of the string scale.”
Fixing all moduli in a simple f-theory compactification (2005, background): “Other tricks might help, for example increasing the flux tadpole by adding D9–D̄9 pairs along the lines of [20,78].”
TOWARD REALISTIC INTERSECTING D-BRANE MODELS (2005, methodology): “In the revised version of [103], employing the K-theory constraints derived in [47], a consistent model was obtained with minor modifications.”
Systematics of moduli stabilisation in Calabi-Yau flux compactifications (2005, background): “(See [5] for a sampling of recent work in additional settings.”
Flux compactifications in string theory: A Comprehensive review (2005, background): “[163, 164, 165, 166] (and stabilization in generic T (6)/(ZN ⊗ZM ) is analyzed Ref.”