Jul 18 – 23, 2022
University of Vienna
Europe/Vienna timezone

dS2 as excitation of AdS2

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Audimax (University of Vienna)


University of Vienna

Universitätsring 1, 1010 Vienna, Austria


Florian Ecker


I introduce a family of 2D dilaton gravity models with state-dependent constant curvature
so that dS2 emerges as an excitation of AdS2. Curiously, the strong coupling region corre-
sponds to the asymptotic region geometrically. Apart from these key differences, many fea-
tures resemble the Almheiri–Polchinski model. I also discuss perturbative and non-perturbative
thermodynamical stability, bubble nucleation through matter shockwaves, and semiclassical
backreaction effects. In some of these models, low temperatures are dominated
by AdS2 but high temperatures are dominated by dS2, concurrent with a recent proposal by

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