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

Ecker, Florian; Grumiller, Daniel; McNees, Robert

doi:10.48550/arxiv.2204.00045

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2022

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“…They offer the possibility of a holographic interpretation for the static patch of de Sitter. The idea of rearranging the microphysical Hilbert space of quantum gravity in AdS to obtain dS microstates also plays an interesting role in the approach of [7][8][9], and [10,11].…”

Section: Introductionmentioning

confidence: 99%

Interpolating geometries and the stretched dS2 horizon

Anninos

Harris

2022

J. High Energ. Phys.

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We investigate dilaton-gravity models whose solutions contain a large portion of the static patch of dS2. The thermodynamic properties of these theories are considered both in the presence of a finite Dirichlet wall, as well as for asymptotically near-AdS2 boundaries. We show that under certain circumstances such geometries, including those endowed with an asymptotically near-AdS2 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-AdS2 boundary can be viewed as a completion of the stretched cosmological dS2 horizon. We speculate on candidate microphysical models.

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