Model building on asymmetric Z3 orbifolds: Non-supersymmetric models |
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| Institution: | 1. Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, United States;2. Departments of Biostatistics and Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States;3. The Cystic Fibrosis Foundation, Bethesda, MD, United States;4. Department of Pediatrics, University Hospitals Rainbow Babies and Children''s Hospital, Case Western Reserve University School of Medicine, Cleveland, OH, United States;5. Respiratory Institute, The Cleveland Clinic, Cleveland, OH, United States;1. Clinical Associate Professor, Herman Ostrow School of Dentistry of USC and Private Practice, Los Angeles, CA, United States;2. Private practice, 3801 International Drive, Suite 102, Silver Spring, MD 20906, United States |
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| Abstract: | Four-dimensional string models arising in the asymmetric Z3 orbifold compactifications of the heterotic string are studied. A mechanism for supersymmetry breaking that gives rise to chiral models in four dimensions is presented, and some typical models are discussed. A formalism for calculating one-loop partition functions in Z3 models is developed. One partition function is constructed that may correspond to a non-supersymmetric, tachyon-free theory, with a vanishing cosmological constant as a consequence of Atkin-Lehner symmetry. The negative result of a search for the model corresponding to this partition function is reported. |
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