Topics in String Unification
نویسنده
چکیده
I discuss several aspects of strings as unified theories. After recalling the difficulties of the simplest supersymmetric grand unification schemes I emphasize the distinct features of string unification. An important role in constraining the effective low energy physics from strings is played by duality symmetries. The discussed topics include the unification of coupling constants (computation of sin θW and αs at the weak scale), supersymmetry breaking through gaugino condensation, and properties of the induced SUSY-breaking soft terms. I remark that departures from universality in the soft terms are (in contrast to the minimal SUSY model) generically expected. Talk given at the “Workshop on Electroweak Physics Beyond the Standard Model”, Valencia, 3-5 October 1991. CERN−TH.6342/91 December 1991
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