Analogue gravity and the island prescription

TL;DR

This paper explores how analogue gravity experiments using fluids can simulate black hole phenomena, providing insights into information loss and the island prescription in quantum gravity.

Contribution

It demonstrates that the analogue of information loss in fluid systems is the momentum loss per unit mass, and maintaining this leads to the island prescription.

Findings

Loss of momentum per unit mass corresponds to information loss.

Maintaining momentum loss reproduces the island prescription.

Analogue gravity provides a new perspective on black hole information paradox.

Abstract

Analogue gravity succeeded to simulate Hawking radiation and test it in laboratories. In this setting, the black hole is simulated by an area in a fluid, say water, where no sound wave can escape the event horizon and phonon oscillations are detected as Hawking radiation. This means that the analogue simulations can provide an alternative description, and consequently, a new insight to the high energy physics problems. Now it would be interesting to see what information loss means and how island prescription is interpreted in water experiment. In this paper we show that the analogue of information loss is the loss of momentum per unit mass of the fluid over the horizon and maintaining the momentum loss leads to the island prescription.