paper

Pole-skipping in two-dimensional de Sitter spacetime and double-scaled SYK model

arXiv:2408.12330 · doi:10.1103/f3cb-kmnc

Abstract

We develop the pole-skipping structure in de Sitter (dS) spacetime and find that their leading frequencies satisfy the relation , where and denotes spin. In the two-dimensional dS spacetime, the pole-skipping points near the cosmic horizon for the scalar field of spin-0 and the fermionic field of spin- correspond one-to-one with those in the classical limit as in double-scaled Sachdev-Ye-Kitaev model when the temperature is infinite (DSSYK). This provides a numerical correspondence between quantum gravity in the static patch of two-dimensional dS spacetime and a one-dimensional quantum system, which we consider as a realization of the DS/dS correspondence.

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