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arXiv · 2204.00045

dS$\boldsymbol{_2}$ as excitation of AdS$\boldsymbol{_2}$

Florian Ecker·Daniel Grumiller·Robert McNees
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Abstract

We introduce a family of 2D dilaton gravity models with state-dependent constant curvature so that dS$_2$ emerges as an excitation of AdS$_2$. Curiously, the strong coupling region corresponds to the asymptotic region geometrically. Apart from these key differences, many features resemble the Almheiri--Polchinski model. We discuss perturbative and non-perturbative thermodynamical stability, bubble nucleation through matter shockwaves, and semiclassical backreaction effects. In some of these models, we find that low temperatures are dominated by AdS$_2$ but high temperatures are dominated by dS$_2$, concurrent with a recent proposal by Susskind.

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Florian Ecker, Daniel Grumiller, Robert McNees. 2022-03-31. dS$\boldsymbol{_2}$ as excitation of AdS$\boldsymbol{_2}$. https://doi.org/10.21468/scipostphys.13.6.119

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