3 papers
hep-th2026
An observer's quantization of 3d de Sitter
Andreas Blommaert, Damiano Tietto, Herman Verlinde
What is the density of states of the de Sitter static patch? We propose a definition and calculation of such a density in 3d dS. Our proposal involves a sum over an SL(2,$\mathbb{Z…
hep-th2025
SYK collective field theory as complex Liouville gravity
Andreas Blommaert, Damiano Tietto, Herman Verlinde
We establish a precise relationship between the collective field theory of the double scaled SYK model and the worldsheet theory of the complex Liouville string a.k.a. sine di…
hep-th2025
A microscopic model of de Sitter spacetime with an observer
Damiano Tietto, Herman Verlinde
We introduce a simple microscopic quantum mechanical model of low-dimensional de Sitter holography with an observer. Using semiclassical gravity and elementary thermodynamic consid…