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Anomalous U(1)s in Type I superstring vacua

I. Antoniadis·E. Kiritsis·J. Rizos
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Abstract

We perform a systematic string computation of the masses of anomalous U(1) gauge bosons in four-dimensional orientifold vacua, and we study their localization properties in the internal (compactified) space. We find that N=1 supersymmetric sectors yield four-dimensional contributions, localized in the whole six-dimensional internal space, while N=2 sectors give contributions localized in four internal dimensions. As a result, the U(1) gauge fields can be much lighter than the string scale, so that when the latter is at the TeV, they can mediate new non-universal repulsive forces at submillimeter distances much stronger than gravity. We also point out that even U(1)s which are free of four-dimensional anomalies may acquire non-zero masses as a consequence of six-dimensional anomalies.

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I. Antoniadis, E. Kiritsis, J. Rizos. 2002-06-12. Anomalous U(1)s in Type I superstring vacua. https://doi.org/10.1016/s0550-3213(02)00458-3

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