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The effective interactions of chiral families in four-dimensional superstrings |
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| Institution: | 1. CERN, CH-1211 Geneva 23, Switzerland;2. Physics Department, UCLA, Los Angeles, CA 90024, USA;3. Physics Department, UCLA, Los Angeles, CA 90024, USA;4. Dipartimento di Fisica, Università di Milano, Italy;5. INFN, Sezione di Milano, I-20133 Milan, Italy;6. Lawrence Berkeley Laboratory, Berkeley, CA 94720, USA;7. Department of Physics, UCB, Berkeley, CA 94720, USA;1. Center for Elementary Particle Physics, Ilia State University, 0162 Tbilisi, Georgia;2. Andronikashvili Institute of Physics, 0177 Tbilisi, Georgia |
| Abstract: | The low-energy effective interactions in four-dimensional superstrings with N = 2 and N = 1 space-time supersymmetry and massless twisted (family) sector are obtained. Our results rely on some general symmetry properties of superstring particle states and on tensor-calculus techniques for supergravity couplings. The novel feature is that the N = 2 quaternionic manifold and N = 1 Kähler space of the scalar superpartners of family multiplets are non-symmetric spaces whose structure can be obtained by “integrating out” the massive superstring modes. |
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