# Uplifting Runaways

- Institution: CERN
- Department: Conferences & Workshops
- Speaker: Severin Luest
- Year: 2019
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3019531)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

I will discuss a mechanism which can lead to a possible instability of the KKLT construction for de Sitter vacua. The sphere at the tip of a warped deformed conifold throat can be destabilized by antibranes placed in the throat. Consequently, the stabilization of moduli should not be treated independently from the antibrane uplift in KKLT-like scenarios. This conifold destabilization mechanism can be avoided by turning on a large amount of flux on the sphere, but tadpole cancelation constraints the hierarchy of scales in a type IIB flux compactification. This indicates that antibrane uplift cannot be used to construct stable de Sitter vacua with a small cosmological constant in perturbative string theory..

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## Lectures

1. [Uplifting Runaways](https://invisiblenetwork.ai/learn/cern/3019531/fcfbc092fa5f), 16 min (CERN's player)