Unruh effect and quantum entanglement for the non-uniform Rindler spacetime

• URL: http://arxiv.org/abs/2512.23892v1
• Date: Mon, 29 Dec 2025 22:54:17 GMT
• Title: Unruh effect and quantum entanglement for the non-uniform Rindler spacetime
• Authors: Manuel de Atocha Rodríguez Fernández, Alexander I. Nesterov, Gennady P. Berman, C. Moreno-González,
• Abstract summary: We propose a novel approach for the indirect detection of the Unruh effect without relying on the former restriction.<n>We show that, in a non-uniformly accelerated Rindler spacetime, the particle distribution perceived in the Minkowski vacuum acquires a time-dependent modification of the standard Unruh spectrum.
• Score: 39.146761527401424
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: While the Unruh effect has traditionally been studied under the assumption of uniform acceleration, a simplification motivated by experimental considerations, it is not necessarily true for all non-inertial motions. We propose a novel approach for the indirect detection of the Unruh effect without relying on the former restriction. Previous studies have shown that probing the decoherence of an Unruh-DeWitt detector can significantly reduce the acceleration required for observing the effect by several orders of magnitude compared to earlier proposals. Building on this idea, we develop a theoretical framework describing a non-inertial observer equipped with a detector undergoing non-uniform, time-dependent acceleration. We show that, in a non-uniformly accelerated Rindler spacetime, the particle distribution perceived in the Minkowski vacuum acquires a time-dependent modification of the standard Unruh spectrum. Furthermore, we demonstrate that the inclusion of quantum entanglement leads to a deformation of the Minkowski vacuum into squeezed states.

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