Blommaert and Colleagues Proposes Spectral Density Calculation for De Sitter Static Patches

Andreas Blommaert and colleagues at Princeton University present a new calculation using a sum over SL(2,$\mathbb{Z}$) Kerr-lens spacetimes and a holographic duality to complex Liouville string theory. The calculation yields an exact quantum computation of spectral density, matching predictions from semi-classical gravity and revealing a connection to the double scaled SYK model. This work provides a key microscopic understanding of de Sitter space through a worldline holographic approach. Previously, calculating the density of states for an observer within de Sitter space relied on approximations and semi-classical methods; the new method delivers an exact quantum computation, a first for this cosmological environment. This breakthrough originates from a novel approach summing…