Supersymmetric string theories,superconformal algebras and exceptional groups |
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| Affiliation: | 1. Abramson Family Cancer Research Institute, Institute for Regenerative Medicine and Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104, USA;2. Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242, USA;3. Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA;4. Department of Pediatrics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA;5. Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA;6. Abramson Family Cancer Research Institute and Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA;1. Institute for Scintillation Materials NAS of Ukraine, 60, Nauky ave., 61072 Kharkiv, Ukraine;2. Institut Lumière Matière UMR 5306, Université Lyon, Université Claude Bernard Lyon 1, CNRS, F-69100 Villeurbanne, France;1. imec, Kapeldreef 75, Leuven, Belgium;2. EnergyVille, ThorPark, 8310, Genk, Belgium;3. University of Leuven, Dept. of Electrical Engineering (ESAT), Leuven, Belgium;4. Kuwait University, College of Engineering and Petroleum, Khaldiya, Kuwait;5. 3Carleton University, Ottawa, Canada;6. Tampere University, Electrical Energy Engineering, Tampere, Finland;7. University of Hasselt, Martelarenlaan 42, Hasselt, Belgium;1. The Research Institute of Real and Complex Manifolds (RIRCM), Kyungpook National University, Daegu 41566, Republic of Korea;2. Department of Mathematics & RIRCM, Kyungpook National University, Daegu 41566, Republic of Korea |
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| Abstract: | We study the relation between extended space-time supersymmetry and extended worldsheet symmetries within the context of four-dimensional heterotic string theories. It is shown how these symmetries follow from an underlying E7 and E8 symmetry which also explains the appearance of extra U(1) gauge bosons. Supersymmetry transformation aalways act within a given multiplet of E7 and E8. |
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