A realistic world from intersecting D6-branes

Abstract

We briefly describe a three-family intersecting D6-brane model in Type IIA theory on the T 6 /(Z2 × Z2) orientifold with a realistic phenomenology. In this model, the gauge symmetry can be broken down to the Standard Model (SM) gauge symmetry close to the string scale, and the gauge coupling unification can be achieved. We calculate the supersymmetry breaking soft terms, and the corresponding low energy supersymmetric particle spectrum, which may be tested at the Large Hadron Collider (LHC). The observed dark matter density may also be generated. Finally, we can explain the SM quark masses and CKM mixings, and the tau lepton mass. The neutrino masses and mixings may be generated via the seesaw mechanism as well.

Blueprints of the no-scale multiverse at the LHC

“…In the context of Type II intersecting D-brane models, we have indeed found one realistic Pati-Salam model which might describe Nature as we observe it [28][29][30]. If only the F-terms of three complex structure moduli are non-zero, we also automatically have vanishing vacuum energy, and obtain a generalized No-Scale SUGRA.…”

“…It is important to note that there exist several such generalizations, including the previously mentioned Type II intersecting D-brane models [28][29][30], mirage mediation of flux compactifications [63,64], and the extraction of SUSY breaking soft terms from the leading order compactification of M-theory on S 1 /Z 2 [65][66][67][68][69]; in the latter case we have previously obtained (in a different model context) a generalization employing modulus dominated SUSY breaking [69].…”

Light Higgsino dark matter in the MSSM on D-branes

“…These types of models fall into two general classes, intersecting/magnetized D-brane models on orientifold backgrounds [11][12][13][14][15][16][17][18][19][20][21], and Gepner models [22,23]. One string-derived MSSM satisfying all global consistency conditions has been constructed from intersecting/magnetized D-branes within the context of Type II orientifold compactifications [24][25][26] on a T 6 /(Z 2 × Z 2 ) background. This model contains three generations of quarks and leptons as well as a single pair of Higgs fields 1 .…”

“…The model contains a minimal amount of exotic matter, which may be decoupled from the low-energy sector. In addition, the tree-level gauge couplings are automatically unified at the string scale [25,26].…”

Three- and four-point correlators of excited bosonic twist fields

“…Such models are useful toys, but are still under active development (for original work, see e.g. [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66], for recent work, 1 Here the authors assumed as compactification manifold a factorizable six-torus…”