Supersymmetry breaking, heterotic strings and fluxes

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• 作者：Katrin Becker ; Chris Bertinato ; Yu-Chieh Chung ; Guangyu Guo
• 刊名：Nuclear Physics B
• 出版年：2009
• 出版时间：21 December 2009
• 年：2009
• 卷：823
• 期：3
• 页码：428-447
• 全文大小：215 K

文摘

In this paper we consider compactifications of heterotic strings in the presence of background flux. The background metric is a T² fibration over a K3 base times four-dimensional Minkowski space. Depending on the choice of three-form flux different amounts of supersymmetry are preserved (N=2,1,0). For supersymmetric solutions unbroken space–time supersymmetry determines all background fields except one scalar function which is related to the dilaton. The heterotic Bianchi identity gives rise to a differential equation for the dilaton which we discuss in detail for solutions preserving an N=2 supersymmetry. In this case the differential equation is of Laplace type and as a result the solvability is guaranteed.