000153477 001__ 153477
000153477 005__ 20190316234920.0
000153477 0247_ $$2doi$$a10.1088/1126-6708/2009/03/146
000153477 022__ $$a1126-6708
000153477 02470 $$2ISI$$a000265600800146
000153477 037__ $$aARTICLE
000153477 245__ $$aConstructing de Sitter vacua in no-scale string models without uplifting
000153477 269__ $$a2009
000153477 260__ $$c2009
000153477 336__ $$aJournal Articles
000153477 520__ $$aWe develop a method for constructing metastable de Sitter vacua in N = 1 supergravity models describing the no-scale volume moduli sector of Calabi-Yau string compactifications. We consider both heterotic and orientifold models. Our main guideline is the necessary condition for the existence of metastable vacua coming from the Goldstino multiplet, which constrains the allowed scalar geometries and supersymmetry-breaking directions. In the simplest non-trivial case where the volume is controlled by two moduli, this condition simplifies and turns out to be fully characterised by the intersection numbers of the Calabi-Yau manifold. We analyse this case in detail and show that once the metastability condition is satisfied it is possible to reconstruct in a systematic way the local form of the superpotential that is needed to stabilise all the fields. We apply then this procedure to construct some examples of models where the superpotential takes a realistic form allowed by flux backgrounds and gaugino condensation effects, for which a viable vacuum arises without the need of invoking corrections to the Kahler potential breaking the no-scale property or uplifting terms. We finally discuss the prospects of constructing potentially realistic models along these lines.
000153477 6531_ $$aSupersymmetry Breaking
000153477 6531_ $$aSupergravity Models
000153477 6531_ $$adS vacua in string theory
000153477 6531_ $$aDESITTER VACUA
000153477 6531_ $$aMODULI STABILIZATION
000153477 6531_ $$aORIENTIFOLDS
000153477 700__ $$aCovi, L.
000153477 700__ $$aGomez-Reino, M.
000153477 700__ $$aGross, C.
000153477 700__ $$aPalma, G. A.
000153477 700__ $$0244581$$aScrucca, C. A.$$g181759
000153477 773__ $$k3$$q23$$tJournal of High Energy Physics
000153477 8564_ $$s269857$$uhttps://infoscience.epfl.ch/record/153477/files/file-153477.pdf$$zn/a
000153477 909C0 $$0252314$$pGR-SC$$xU11777
000153477 909CO $$ooai:infoscience.tind.io:153477$$pSB$$particle$$qGLOBAL_SET
000153477 937__ $$aEPFL-ARTICLE-153477
000153477 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000153477 980__ $$aARTICLE