A microscopic model of de Sitter spacetime with an observer
High Energy Physics - Theory
2025-02-07 v1
Abstract
We introduce a simple microscopic quantum mechanical model of low-dimensional de Sitter holography with an observer. Using semiclassical gravity and elementary thermodynamic considerations, we derive a formula for the total entropy of a 3D Schwarzschild-de Sitter universe with an observer. We then match this entropy formula with the exactly known spectral density of the double scaled SYK model. Our result gives a de Sitter interpretation of the appearance of two notions of temperature in DSSYK.
Keywords
Cite
@article{arxiv.2502.03869,
title = {A microscopic model of de Sitter spacetime with an observer},
author = {Damiano Tietto and Herman Verlinde},
journal= {arXiv preprint arXiv:2502.03869},
year = {2025}
}
Comments
15 pages, 3 figures