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Classification of Flat Directions in Perturbative Heterotic Superstring Vacua with Anomalous U(1) | | G. Cleaver
; M. Cvetic
; J.R. Espinosa
; L. Everett
; P. Langacker
; | | Date: |
24 Nov 1997 | | Journal: | Nucl.Phys. B525 (1998) 3-26 | | Subject: | hep-th hep-ph | | 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. | | Source: | arXiv, hep-th/9711178 | | Services: | Forum | Review | PDF | Favorites | |
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