Mathematical Physics and String Theory

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(15.11.) Is de Sitter impossible in String Theory?

Thomas van Riet (Leuven)

15.11.2018 at 16:15

I will first discuss, in pedagogical and broad terms, how string theorist go about to construct meta-stable dS vacua. Then I overview the various potential problems with those constructions and speculate on why it is not unreasonable to think that dS solutions are impossible, they are in the so-called Swampland. Particular emphasis will be given to anti-brane uplifting and I will argue why anti-branes seem to give rise to meta-stable states in a holographic set-up, but might fail to give dS space after compactification of extra dimensions.

Arnold Sommerfeld Center
Theresienstrasse 37
Room 348