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- W2057015612 abstract "Heterotic string models in which the space-time gauge symmetry is realized as a level k⩾2 Kac-Moody algebra on the string world-sheet offer phenomenological features not present for the level k = 1 case (which includes all heterotic string models seriously considered to date). In particular, string models with N = 1 space-time supersymmetry and/or chiral matter fields can contain massless scalar fields in the adjoint (or higher-dimensional) representation of the gauge group provided that k ⩾ 2. Some explicit examples in four dimensions constructed solely from free, real world-sheet fermions are given, contradicting recent would-be no go theorems, and re-opening the possibilities for embedding standard Grand Unified Theories within string models. The possibilities for more general constructions allowing higher-level Kac-Moody algebras are also briefly discussed." @default.
- W2057015612 created "2016-06-24" @default.
- W2057015612 creator A5088637417 @default.
- W2057015612 date "1990-06-01" @default.
- W2057015612 modified "2023-09-25" @default.
- W2057015612 title "Embedding higher-level Kac-Moody algebras in heterotic string models" @default.
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- W2057015612 doi "https://doi.org/10.1016/0550-3213(90)90251-8" @default.
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