There is more to the de Sitter horizon than just the area

TL;DR

This paper demonstrates that the de Sitter horizon encodes comprehensive gauge-invariant information about static, charged, and rotating objects inside the spacetime, extending beyond just the horizon's area and entropy.

Contribution

It reveals that the de Sitter horizon contains all gauge-invariant data about certain bulk configurations, including charge and angular momentum, not just entropy.

Findings

Horizon encodes gauge-invariant information about bulk objects.

Configurations like dipoles and cubes influence horizon geometry.

Bulk object details are imprinted onto the cosmological horizon.

Abstract

It is well known that the area of the de Sitter cosmological horizon is related to the entropy of the bulk spacetime. Recent work has however shown that the horizon encodes more information about the bulk spacetime than just the entropy. In this work, we show that the horizon contains all of the gauge invariant (diffeomorphism and $U(1)$) information about (static albeit unstable) configurations of charged and rotating objects placed deep inside the de Sitter spacetime. We study highly symmetric objects, such as dipoles and cubes, built of objects with electric charge and angular momentum at their vertices. We show how these configurations affect the geometry of the cosmological horizon and imprint detailed information about the objects in the bulk onto the cosmological horizon.