Buchmuller Wilfried, Dierigl Markus, Ruehle Fabian, Schweizer Julian
Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany.
Phys Rev Lett. 2016 Jun 3;116(22):221303. doi: 10.1103/PhysRevLett.116.221303.
We find a new class of metastable de Sitter solutions in compactifications of six-dimensional supergravity motivated by type IIB or heterotic string vacua. Two Fayet-Iliopoulos terms of a local U(1) symmetry are generated by magnetic flux and by the Green-Schwarz term canceling the gauge anomalies, respectively. The interplay between the induced D term, the moduli dependence of the effective gauge coupling, and a nonperturbative superpotential stabilizes the moduli and determines the size of the extra dimensions.
我们在由IIB型或杂化弦真空激发的六维超引力紧致化中发现了一类新的亚稳德西特解。局部U(1)对称性的两个费耶特 - 伊利奥普洛斯项分别由磁通量和抵消规范反常的格林 - 施瓦茨项产生。诱导的D项、有效规范耦合的模依赖性和非微扰超势之间的相互作用使模稳定并确定了额外维度的大小。
