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Topics in String Unification

Luis E. Ibanez
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Abstract

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 $\sin ^2θ_W$ and $α_s$ 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.

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Luis E. Ibanez. 1991-12-19. Topics in String Unification. https://arxiv.org/abs/hep-th/9112050

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