dS$\boldsymbol{_2}$ as excitation of AdS$\boldsymbol{_2}$
High Energy Physics - Theory
2022-12-07 v3 General Relativity and Quantum Cosmology
Abstract
We introduce a family of 2D dilaton gravity models with state-dependent constant curvature so that dS emerges as an excitation of AdS. 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 but high temperatures are dominated by dS, concurrent with a recent proposal by Susskind.
Keywords
Cite
@article{arxiv.2204.00045,
title = {dS$\boldsymbol{_2}$ as excitation of AdS$\boldsymbol{_2}$},
author = {Florian Ecker and Daniel Grumiller and Robert McNees},
journal= {arXiv preprint arXiv:2204.00045},
year = {2022}
}
Comments
40 pages plus appendices, v2: added 2 refs and extended discussion in sec 6, v3: added ref and a comment in sec 4