2008/09/30 by Elias Kiritsis, Bert Schellekens, Mirian Tsulaia · 1 citation
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Homotopy and Cohomology in Algebraic Topology #Quantum and Classical Electrodynamics #hep-th
paper · pdf · doi:10.1088/1126-6708/2008/10/106
published as JHEP0810:106,2008 · 31 pages; misprints corrected, references added
openalex publication_date 2008/10/29 · arxiv created 2008/11/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
A complete analysis of orientifold compactifications involving Gepner models that are free fields (k=1,2) is performed. A set of tadpole solutions is found that are variants of a single chiral spectrum. The vacua found have the property that different families have different U(1) charges so that one family cannot obtain masses in perturbation theory. Its masses must come from instantons, allowing for a hierarchy of masses. The phenomenological aspects of such vacua are analyzed.