Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-06-11
Nucl.Phys.B647:235-251,2002
Physics
High Energy Physics
High Energy Physics - Theory
18 pages, Latex file, some clarifying comments added, version to appear in Nuclear Physics B
Scientific paper
10.1016/S0550-3213(02)00935-5
Within a toroidal orbifold framework, we exhibit intersecting brane-world constructions of flipped SU(5) \times U(1) GUT models with various numbers of generations, other chiral matter representations and Higgs representations. We exhibit orientifold constructions with integer winding numbers that yield 8 or more conventional SU(5) generations, and orbifold constructions with fractional winding numbers that yield flipped SU(5) \times U(1) models with just 3 conventional generations. Some of these models have candidates for the 5 and {\bar 5} Higgs representations needed for electroweak symmetry breaking, but not for the 10 and {\bar 10} representations needed for GUT symmetry breaking. We have also derived models with complete GUT and electroweak Higgs sectors, but these have undesirable extra chiral matter.
Ellis John
Kanti Panagiota
Nanopoulos Dimitri V.
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