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arXiv · 2209.06144

Interpolating geometries and the stretched dS$_2$ horizon

Dionysios Anninos·Eleanor Harris
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Abstract

We investigate dilaton-gravity models whose solutions contain a large portion of the static patch of dS$_2$. The thermodynamic properties of these theories are considered both in the presence of a finite Dirichlet wall, as well as for asymptotically near-AdS$_2$ boundaries. We show that under certain circumstances such geometries, including those endowed with an asymptotically near-AdS$_2$ boundary, can be locally and even globally thermodynamically stable within particular temperature regimes. First order phase transitions reminiscent of the Hawking-Page transition are discussed. For judiciously chosen models, the near-AdS$_2$ boundary can be viewed as a completion of the stretched cosmological dS$_2$ horizon. We speculate on candidate microphysical models.

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Dionysios Anninos, Eleanor Harris. 2022-09-13. Interpolating geometries and the stretched dS$_2$ horizon. https://doi.org/10.1007/jhep11(2022)166

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