Analogue simulation of quantum gravity black hole models in a dc-SQUID array

TL;DR

This paper presents an analog quantum simulation of black hole and white hole spacetime dynamics using a dc-SQUID array, enabling the study of star collapse and bounce phenomena in a controlled laboratory setting.

Contribution

It introduces a novel method to simulate curved spacetime effects and scalar field propagation with SQUID arrays, bridging quantum simulation and gravitational physics.

Findings

Downstream radiation scenario is more experimentally feasible.

Magnetic flux profiles necessary for simulation are computed.

The model captures key features of black hole and white hole spacetimes.

Abstract

We propose an analog quantum simulation for studying the collapse and bounce of a star from infinity. In this spacetime, which encompasses both a black hole and a white hole, we place a massless scalar field that propagates at the speed of light, which is modified by the curvature. We simulate this system using an SQUID array, in which we can alter the propagation of light using an external magnetic field. We consider both infalling and outfalling radiation, giving rise to two different scenarios: downstream and upstream radiation. We compute the magnetic flux profile required by the simulation in both cases and find out that the former is more experimentally suitable.