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

Ecker, Florian; Grumiller, Daniel; McNees, Robert

doi:10.21468/SciPostPhys.13.6.119

SciPost Physics

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

Florian Ecker, Daniel Grumiller, Robert McNees

SciPost Phys. 13, 119 (2022) · published 5 December 2022

doi: 10.21468/SciPostPhys.13.6.119
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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.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.13.6.119
TI  - dS$\boldsymbol{_2}$ as excitation of AdS$\boldsymbol{_2}$
PY  - 2022/12/05
UR  - https://www.scipost.org/SciPostPhys.13.6.119
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 13
IS  - 6
SP  - 119
A1  - Ecker, Florian
AU  - Grumiller, Daniel
AU  - McNees, Robert
AB  - 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.
ER  -

@Article{10.21468/SciPostPhys.13.6.119,
	title={{dS$\boldsymbol{_2}$ as excitation of AdS$\boldsymbol{_2}$}},
	author={Florian Ecker and Daniel Grumiller and Robert McNees},
	journal={SciPost Phys.},
	volume={13},
	pages={119},
	year={2022},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.13.6.119},
	url={https://scipost.org/10.21468/SciPostPhys.13.6.119},
}

Cited by 5

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¹ Florian Ecker,
¹ Daniel Grumiller,
² Robert McNees

Funders for the research work leading to this publication

Austrian Science Fund (FWF) (through Organization: Fonds zur Förderung der wissenschaftlichen Forschung / FWF Austrian Science Fund [FWF])
Loyola University Chicago