Enhancement of Unruh effect in high-intensity laser fields using hyperbolic metamaterials

TL;DR

This paper proposes that hyperbolic metamaterials can significantly amplify the Unruh effect in high-intensity laser fields, enabling detection at much lower accelerations than previously possible.

Contribution

It introduces a novel method of enhancing the Unruh effect using hyperbolic metamaterials to reduce the required electron acceleration for detection.

Findings

Unruh effect is strongly enhanced near hyperbolic metamaterials.

Detection of Unruh radiation can be achieved with much smaller accelerations.

Potential for practical observation of Unruh radiation at lower laser intensities.

Abstract

High-intensity laser fields acting on free electrons were proposed to create sufficiently large accelerations to enable detection of Unruh radiation. However, the currently achievable electron accelerations are not large enough. Here we demonstrate that Unruh effect in high-intensity laser fields is strongly enhanced near hyperbolic metamaterials, so that many orders of magnitude smaller accelerations may be used to detect Unruh radiation.