Anomalous U(1) D-term Contribution in Type I String Models

Abstract

We study the $D$-term contribution for anomalous U(1) symmetries in type I string models and derive general formula for the $D$-term contribution, assuming that the dominant source of SUSY breaking is given by $F$-terms of the dilaton, (overall) moduli or twisted moduli fields. On the basis of the formula, we also point out that there are several different features from the case in heterotic string models. The differences originate from the different forms of Kähler potential between twisted moduli fields in type I string models and the dilaton field in heterotic string models.

16 pages, latex, no figure

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• Remark on modular weights in low-energy effective field theory from type II string theory
• Soft masses in superstring models with anomalous U(1) symmetries
• Phenomenology of Twisted Moduli in Type I String Inspired Models
• Anomalous U(1) Mediation in Large Volume Compactification
• Non-perturbative Kahler Potential, Dilaton Stabilization and Fayet-Iliopoulos Term
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• Peccei-Quinn invariant singlet extended SUSY with anomalous U(1) gauge symmetry