Two Loop Dilaton Tadpole Induced by Fayet - Iliopoulos D - Terms In Compactified Heterotic String Theories
نویسنده
چکیده
We calculate the two loop dilaton tadpole induced by Fayet-Iliopoulos Dterms in heterotic string theories compactified on arbitrary supersymmetry preserving backgrounds. The result turns out to be a total derivative in the moduli and hence receives contribution solely from the boundary of the moduli space. This contribution is shown to be proportional to the square of the coefficient of the one loop Fayet-Iliopoulos D-term in agreement with what is expected from effective lagrangian considerations. Submitted to Nucl. Phys. B * Work supported in part by the Department of Energy, contract DE-AC03-76SF00515 and the National Science Foundation grant, PHYS-83-10654. + Address after Sept. 1, 1987: Institute for Advanced Study, Princeton, NJ 08540
منابع مشابه
Fayet - Iliopoulos D terms in string theory
One loop scalar masses induced by Fayet-Ilipoulos D terms in string theory .are calculated directly in the heterotic string theory for an arbitrary compactification which preserves space-time supersymmetry at the string tree level. The result is shown to be a total derivative in the moduli space of a torus with two punctures, and hence receives contribution only from the boundary of this moduli...
متن کاملD - terms and D - strings in open string models
We study the Fayet-Iliopoulos (FI) D-terms on D-branes in type II Calabi-Yau backgrounds. We provide a simple worldsheet proof of the fact that, at tree level, these terms only couple to scalars in closed string hypermultiplets. At the one-loop level, the D-terms get corrections only if the gauge group has an anomalous spectrum, with the anomaly cancelled by a Green-Schwarz mechanism. We study ...
متن کاملString Calculation of Fayet-iliopoulos D-terms in Arbitrary Supersymmetric Compactifications”
We calculate the Fayet-Iliopoulos D-terms generated at one loop for the heterotic string in any background which preserves four-dimensional space-time supersymmetry and maintains (2,0) world-sheet superconformal invariance. Although our calculation is performed in the full string theory, the result can be evaluated entirely in terms of properties of the massless spectrum. Furthermore it agrees ...
متن کاملRemarks on Anomalous U(1) Symmetries in String Theory A
Anomalous U(1) gauge symmetries appear frequently both in heterotic and type I/type II string theory. In the heterotic case we find at most a single anomalous U(1), while in open string theories several such symmetries can appear. We review the properties of the anomalous gauge bosons, the appearance of Fayet-Iliopoulos terms and the concept of heterotic-type I duality. Phenomenological applica...
متن کاملOn the One Loop Fayet-Iliopoulos Term in Chiral Four Dimensional Type I Orbifolds
We consider the generation of Fayet-Iliopoulos terms at one string loop in some recently found N = 1 open string orbifolds with anomalous U(1) factors with nonvanishing trace of the charge. Low-energy field theory arguments lead one to expect a one loop quadratically divergent Fayet-Iliopoulos term. We show that a one loop Fayet-Iliopoulos term is not generated, due to a cancellation between co...
متن کامل