https://doi.org/10.1140/epjc/s10052-008-0740-1
Review
From strings to the MSSM
1
Physikalisches Institut der Universität Bonn, Nussallee 12, 53115, Bonn, Germany
2
Physik Department T30, Technische Universität München, James-Franck-Strasse, 85748, Garching, Germany
* e-mail: nilles@th.physik.uni-bonn.de
Received:
27
June
2008
Published online:
25
October
2008
We review recent progress in embedding the supersymmetric standard model into string theory. We discuss how, with the incorporation of certain aspects of grand unification, a search strategy can be developed that allows one to efficiently find rather large numbers of promising string vacua. Global string-derived models with the following features are discussed: (i) exact MSSM spectrum below the unification scale; (ii) R-parity; (iii) hierarchical Yukawa couplings with non-trivial mixing; (iv) solution to the μ problem; (v) see-saw suppressed neutrino masses.
© Springer-Verlag, 2009
