# de Sitter vacua at leading order?

- Institution: CERN
- Department: Conferences, Workshops & Schools
- Speaker: Jakob Ulrich Moritz
- Year: 2024
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3020134)
- 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)

In this talk I will present the first explicit example of a de Sitter vacuum as envisioned by Kachru, Kallosh, Linde and Trivedi 20 years ago, in the tree level approximation in both the string loop and $\alpha'$ expansion. I will begin by summarizing the construction of all the relevant components, from Calabi-Yau orientifolds, and a mechanism to generate exponentially small superpotentials from quantized fluxes, to the explicit stabilization of hundreds of Kähler moduli via non-perturbative D3-instantons on cycles that satisfy Witten's rigidity conditions, and the construction of warped Randall-Sundrum throats that can host SUSY breaking uplifts. However, some corrections in the $\alpha'$ and $g_s$ expansions are potentially important but are not fully known, and I will comment on robustness against these.

This talk is based on upcoming work with Liam McAllister, Richard Nally, and Andreas Schachner..

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## Lectures

1. [de Sitter vacua at leading order?](https://invisiblenetwork.ai/learn/cern/3020134/2ca14eb1dca2), 32 min (CERN's player)