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The “landscape” of Pati–Salam heterotic superstring vacua

✍ Scribed by J. Rizos

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
168 KB
Volume
58
Category
Article
ISSN
0015-8208

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✦ Synopsis

Abstract

The main aspects of a recently developed method for classification of heterotic superstring vacua in the Free Fermionic Formulation are presented. Using these techniques we classify a big number of approximately 10^15^ heterotic string vacua with Pati–Salam, SU(4) × SU(2)~L~ × SU(2)~R~ gauge symmetry with respect to their main phenomenological features as the number of families, Pati–Salam breaking Higgs, Standard Model Higgs doublets, additional triplets and exotic charge states. We identify an interesting subclass of these vacua, approximately one to one million, whose massless spectrum is completely free of fractionally charge states.

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Transitions in the web of heterotic vacu
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✍ L.B. Anderson; J. Gray; B.A. Ovrut 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 919 KB

## Abstract We analyze transitions between heterotic vacua with distinct gauge bundles using two complementary methods – the effective four‐dimensional field theory and the corresponding geometry. From the viewpoint of effective field theory, such transitions occur between flat directions of the po