de Sitter in non-supersymmetric string theories: no-go theorems and brane-worlds

Journal of High Energy Physics

Stefano Lanza¹  Ivano Basile² 

[1] Jefferson Physical Laboratory, Harvard University, 02138, Cambridge, MA, USA;Scuola Normale Superiore and I.N.F.N., Piazza dei Cavalieri 7, 56126, Pisa, Italy;

关键词: Flux compactifications;    Supersymmetry Breaking;    Effective Field Theories;    D-branes;   

DOI  :  10.1007/JHEP10(2020)108

来源: Springer

【 摘 要 】

We study de Sitter configurations in ten-dimensional string models where supersymmetry is either absent or broken at the string scale. To this end, we derive expressions for the cosmological constant in general warped flux compactifications with localized sources, which yield no-go theorems that extend previous works on supersymmetric cases. We frame our results within a dimensional reduction and connect them to a number of Swampland conjectures, corroborating them further in the absence of supersymmetry. Furthermore, we construct a top-down string embedding of de Sitter brane-world cosmologies within unstable anti-de Sitter landscapes, providing a concrete realization of a recently revisited proposal.

【 授权许可】

CC BY