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Open Quantum Systems Decoherence

Probing Unruh Effect from Enhanced Decoherence

arXiv
Authors: Ran Li, Zhong-Xiao Man, Jin Wang

Year

2026

Paper ID

39104

Status

Preprint

Abstract Read

~2 min

Abstract Words

103

Citations

N/A

Abstract

We investigate the decoherence of an Unruh-DeWitt detector coupled to scalar, electromagnetic, and spinor fields in four-dimensional Minkowski spacetime. By employing the Schwinger-Keldysh influence functional formalism, we derive a universal scaling law relating the decoherence rate to the proper acceleration a and the scaling dimension Δ of the environmental field operator. By analyzing both sharp (top-hat) and smooth Gaussian switching functions, it is shown that the decoherence rate in the asymptotic long-time limit scales as a2Δ-1. This scaling indicates that increasing scaling dimension of the coupling field operators can significantly enhance the decoherence, thereby providing a more sensitive probe of the Unruh effect.

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  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • We investigate the decoherence of an Unruh-DeWitt detector coupled to scalar, electromagnetic, and spinor fields in four-dimensional Minkowski spacetime.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2603.26121 [2] arXiv https://arxiv.org/abs/2603.26121 [3] Publisher https://arxiv.org/abs/2603.26121

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