Browsing by Subject "string theory"

Now showing items 1-4 of 4

    • The F-SU(5) Model with Various Supersymmetry Breaking Soft Terms 
      Hu, Dingli (2017-07-24)
      The flipped SU(5) grand unification model with additional vector-like multiplets (FSU(5)) in the framework of General No-scale Supergravity is studied. The highly constrained soft supersymmetry breaking terms of the ...
    • Higher Derivative D-brane Couplings 
      Guo, Guangyu (2012-10-19)
      This dissertation covers two different but related topics: the construction of consistent models in type IIB and heterotic string theories, and the higher derivative couplings for D-brane action, which will enable us to ...
    • Phenomenology of heterotic and type II orientifold string models 
      Mayes, Van Eric (2009-05-15)
      Cryptons are metastable bound states of fractionally-charged particles that arise generically in the hidden sectors of models derived from heterotic string. We study their properties and decay modes in a specific flipped ...
    • Topological Defects in String Theory Orbifolds with Target Spaces C/Zn and S1/Z2 
      Cabrera, Yaniel (2017-06-28)
      We study conformal defects in two important examples of string theory orbifolds. First, we show that topological defects in the language of Landau-Ginzburg models carry information about the RG flow between the non-compact ...