On Realistic Brane Worlds from Type I Strings

  title={On Realistic Brane Worlds from Type I Strings},
  author={Gerardo Aldazabal and Luis Ib{\'a}{\~n}ez and Fernando Quevedo},
We review recent progress in constructing realistic brane models from type I string vacua. Explicit models with three families of the standard model gauge group and its left-right generalizations are presented with supersymmetry broken at the string scale of order $M_s\sim 10^{10-12}$ GeV, realizing gravity mediated supersymmetry breaking at low energies. Unification of couplings occurs at the string scale due to the particular U(1) normalizations of D-branes, as well as to the existence of a… CONTINUE READING

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