We consider a novel scenario for modulus stabilisation in IIB string compactifications in which the Kahler moduli are stabilised by a general set-up with two kinds of non-perturbative effects: (i) standard Kahler moduli-dependent non-perturbative effects from gaugino condensation on D7-branes or E3-instantons wrapping four-cycles in the geometric regime; (ii) dilaton-dependent non-perturbative effects from gaugino condensation on space-time filling D3-branes or E(-1)-instantons at singularities. For the LARGE Volume Scenario (LVS), the new dilaton-dependent non-perturbative effects provide a positive definite contribution to the scalar potential that can be arbitrarily tuned from fluxes to give rise to de Sitter vacua. Contrary to anti D3-branes at warped throats, this term arises from a manifestly supersymmetric effective action. In this new scenario the "uplifting" term comes from F-terms of blow-up modes resolving the singularity of the non-perturbative quiver. We discuss phenomenological and cosmological implications of this mechanism. This set-up also allows a realisation of the LVS for manifolds with zero or positive Euler number.
翻译:在IIB弦压缩中,我们考虑一种新型的模量稳定情景,在这种情景中,Kahler 模质通过一种具有两种非扰动效应的一般设置稳定下来。 对于LARGE量假设(LVS),新的dilal-moduli依赖的无扰动效应对在D7-branes或E3-instantons包装四轮的卡鲁格诺混凝成成(在几何制度中包合四轮的)中可以任意调整通量以引起降压真空的卡路尔的卡路尔无扰动效应提供了积极的肯定贡献。与在扭曲的喉喉部的反D3型压成对照,这个术语来自明显超对称的有效动作。在这个新的假设中,“提升”的dilaton非扰动性不扰动性(LVS)效应可以对卡路里潜力做出任意调整。这个比通量可以任意调整,以引起降压蒸气。这个术语与在扭曲的喉喉部的反D3型压压成反,来自于明显的超对称的有效动作动作。在这个新假设中,“提升的Slum-rum-rumal-lum-com-comal-commusional 讨论这个不解决这个不透明的“U化的递化的递化”术语。