Mitigating the information degradation in a massive Unruh-DeWitt theory

TL;DR

This paper explores how the mass of a scalar field influences information preservation in Unruh-DeWitt detectors, showing that higher mass reduces information degradation and protects against the Unruh effect.

Contribution

It introduces a novel analysis of the scalar field mass as a factor in mitigating information loss in accelerated quantum systems using interferometric methods.

Findings

Increased scalar field mass decreases information degradation.

Information remains preserved for scalar masses greater than or equal to the energy gap.

Scalar field mass acts as a protective factor against the Unruh effect.

Abstract

We investigated the influence of the massive scalar field on the information degradation concerning the Unruh-DeWitt (UDW) detectors. In this conjecture, we adopted a system with a finite and large interaction time. To accomplish our purpose, one examines the quantum coherence of a uniformly accelerated qubit and the probability of finding the detector in the ground state. In this framework, we consider a quantum interferometric circuit to obtain the probability, visibility, and coherence. Naturally, these measurements provide us with wave-like information. Besides, one modifies the circuit to describe the path distinguishability and the particle-like information. These results are promising, as they allow us to understand the influence of the Unruh effect on the wave-particle duality. Thus, our findings announce that the increase in the scalar field mass induces a decrease in information degradation. Finally, we noted that the information concerning the Unruh effect remains preserved when $m \geq \Omega$. Therefore, the detector cannot absorb particles with mass equal to or greater than its energy gap. These results indicate that the scalar field mass is a protective factor against information degradation for systems under high acceleration conditions.