Anderson, Lara B.Gray, James A.Lukas, AndreOvrut, Burt2017-02-112017-02-112009-06-220370-2693http://hdl.handle.net/10919/74996We explicitly describe, in the language of four-dimensional N = 1 supersymmetric field theory, what happens when the moduli of a heterotic Calabi-Yau compactification change so as to make the internal non-Abelian gauge fields non-supersymmetric. At the edge of the region in Kahler moduli space where supersymmetry can be preserved, an additional anomalous U(1) gauge symmetry appears in the four-dimensional theory. The D-term contribution to the scalar potential associated to this U(1) attempts to force the system back into a supersymmetric configuration and provides a consistent low-energy description of gauge bundle stability.190 - 194 (5) page(s)application/pdfenIn CopyrightAstronomy & AstrophysicsPhysics, NuclearPhysics, Particles & FieldsPhysicsPHYSICS, MULTIDISCIPLINARYSTANDARD MODELSTRING THEORYCOMPACTIFICATIONSVACUACOUPLINGSTERMSSU(5)GUTArticle - Refereedhttps://doi.org/10.1016/j.physletb.2009.05.0256773-4