Reconstruction of an AdS Radiation/Boson Star Bulk Geometry Using Light-cone Cuts

TL;DR

This paper investigates how light-cone cuts encode bulk matter content in holographic spacetimes, demonstrating a numerical reconstruction of a 4D AdS geometry with a boson star and radiation.

Contribution

It introduces a method to extract matter information from light-cone cuts and provides a numerical example of reconstructing a complex bulk geometry.

Findings

Light-cone cut structures encode matter content.

Hyperbolic angles at cusps reveal matter properties.

Successful numerical reconstruction of a boson star and radiation in AdS.

Abstract

Light-cone cuts have recently been proposed as a method to reconstruct the conformal metric of a holographic spacetime. We explore how additional information about the bulk geometry gets encoded in the structure of these light-cone cuts. In particular, we study how the hyperbolic angle related to a cusp in the light-cone cut encodes information about the matter content of the spacetime. We provide an explicit numerical example reconstructing the metric for a 4- dimensional spacetime composed by the superposition of a boson star and a gas of radiation in AdS.