Effective Actions Near Singularities: The STU-Model

Details Effective Actions Near Singularities: The STU-Model Effective Actions Near Singularities: The STU-Model

2003-01-17

arxiv.org/abs/hep-th/0301126v2

Fortsch.Phys. 51 (2003) 892-896

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, LaTeX. Contribution to the proceedings of the 35th Symposium Ahrenshoop, Berlin, Germany, August 2002. v2: reference

Scientific paper

10.1002/prop.200310113

We derive the low energy effective action of the STU-model in four and five dimensions near the line T=U, where SU(2) gauge symmetry enhancement occurs. By `integrating in' the light W^{\pm} bosons together with their superpartners, the quantum corrected effective action becomes non-singular at T=U and manifestly SU(2) invariant. The four-dimensional theory is found to be consistent with modular invariance and the five-dimensional decompactification limit. This talk concisely summarizes results that have been obtained in collaboration with J. Louis and T. Mohaupt.

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