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Very Large Intermediate Scales in Three Generation Models

Authors
  • del Aguila, F.
  • Coughlan, G.D.
Publication Date
Jan 01, 1988
Identifiers
DOI: 10.1016/0370-2693(88)91077-5
OAI: oai:inspirehep.net:264026
Source
INSPIRE-HEP
Keywords
License
Unknown
External links

Abstract

The issue of large intermediate scales is addressed in a class of three-generation models based on the best-known Calabi-Yau compactification of the heterotic string. The renormalisation group equations for this class are studied to determine the scale, μ ≡ M I , at which the first “intermediate-scale” symmetry breaking occurs. Throughout most of the parameter space specifying the models, M I is found to be extremely close to the compactification scale, M c , as is required by phenomenology. This is due to the large number of fields which are massless below M c . Depending on unknown normalisation factors, different directions of symmetry breaking are possible, including the one thus far preferred on phenomenological grounds.

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