52 citations · 62 across the 3 of their papers we have counts for
5 papers · 1 filter
Two Higgs Pair Heterotic Vacua and Flavor-Changing Neutral Currents
Michael Ambroso, Volker Braun, Burt A. Ovrut
We present a vacuum of heterotic M-theory whose observable sector has the MSSM spectrum with the addition of one extra pair of Higgs-Higgs conjugate superfields. The quarks/leptons…
Worldsheet Instantons and Torsion Curves
Volker Braun, Maximilian Kreuzer, Burt A. Ovrut +1
We study aspects of worldsheet instantons relevant to a heterotic standard model. The non-simply connected Calabi-Yau threefold used admits Z_3 x Z_3 Wilson lines, and a more detai…
The Standard Model on the Quintic
Ralph Blumenhagen, Volker Braun, Boris Kors +1
We describe the general geometrical framework of brane world constructions in orientifolds of type IIA string theory with D6-branes wrapping 3-cycles in a Calabi-Yau 3-fold, and po…
K-Theory Torsion
Volker Braun
The Chern isomorphism determines the free part of the K-groups from ordinary cohomology. Thus to really understand the implications of K-theory for physics one must look at manifol…
On extremal transitions of Calabi-Yau threefolds and the singularity of the associated 7-space from rolling
Volker Braun, Chien-Hao Liu
M-theory compactification leads one to consider 7-manifolds obtained by rolling Calabi-Yau threefolds in the web of Calabi-Yau moduli spaces. The resulting 7-space in general has s…