| Article | |
| Report number | hep-th/9711178 ; CERN-TH-97-338 ; UPR-779-T ; IEM-FT-166 |
| Title | Classification of Flat Directions in Perturbative Heterotic Superstring Vacua with Anomalous U(1) |
| Author(s) | Cleaver, G ; Cvetic, M ; Espinosa, J R ; Everett, L ; Langacker, P G |
| Affiliation | (Univ. Pennsylvania Philadelphia) ; (CERN) |
| Publication | 1998 |
| Imprint | 25 Nov 1997 |
| Number of pages | 26 |
| In: | Nucl. Phys. B 525 (1998) 3-26 |
| DOI | 10.1016/S0550-3213(98)00277-6 |
| Subject category | Particle Physics - Theory |
| Abstract | We develop techniques to classify D- and F-flat directions for N=1 supersymmetric string vacua of the perturbative heterotic string theory, which possess an anomalous U(1) gauge group at the tree level. Genus-one corrections generate a Fayet-Iliopoulos term for the D-term of U(1)_A, which is canceled by non-zero vacuum expectation values (VEVs) of certain massless multiplets in such a way that the anomalous U(1) is broken, while maintaining the D- and F-flatness of the effective field theory. A systematic analysis of flat directions is given for non-zero VEVs of non-Abelian singlets, and the techniques are illustrated for a specific model. The approach sets the stage to classify the D- and F-flat directions for a large class of perturbative string vacua. This classification is a prerequisite to address systematically the phenomenological consequences of these models. |
Corresponding record in: Inspire
Email contact: espinosa@langacker.hep.upenn.edu
Element opprettet 1997-11-25, sist endret 2018-09-24