An example of a uniformly accelerated particle detector with non-Unruh response

TL;DR

This paper introduces a scalar background in Minkowski spacetime that accelerates particles without creating pairs, serving as a more suitable Unruh detector, but it does not exhibit the expected thermal response.

Contribution

It proposes a new scalar background for accelerated particles that avoids pair creation, providing a novel model for studying Unruh effect responses.

Findings

The scalar background imparts constant proper acceleration without pair production.

The proposed detector does not show the universal thermal Unruh response.

Abstract

We propose a scalar background in Minkowski spacetime imparting constant proper acceleration to a classical particle. In contrast to the case of a constant electric field the proposed scalar potential does not create particle-antiparticle pairs. Therefore an elementary particle accelerated by such field is a more appropriate candidate for an "Unruh-detector" than a particle moving in a constant electric field. We show that the proposed detector does not reveal the universal thermal response of the Unruh type.