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  • Letter

Observing single particles beyond the Rindler horizon

Riccardo Falcone1 and Claudio Conti1,2,3

  • 1Department of Physics, University of Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy
  • 2Institute for Complex Systems (ISC-CNR), Department of Physics, University Sapienza, Piazzale Aldo Moro 2, 00185 Rome, Italy
  • 3Research Center Enrico Fermi, Via Panisperna 89a, 00184 Rome, Italy

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Phys. Rev. A 107, L030203 – Published 31 March, 2023

DOI: https://doi.org/10.1103/PhysRevA.107.L030203

Abstract

We show that Minkowski single-particle states localized beyond the horizon modify the Unruh thermal distribution in an accelerated frame. This means that, contrary to classical predictions, accelerated observers can reveal particles emitted beyond the horizon. The method we adopt is based on deriving the explicit Wigner characteristic function for the complete description of the quantum field in the noninertial frame and can be generalized to general states.

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Phys. Rev. A 107, L030203– Published 31 March, 2023
  • Received 1 December 2021
  • Revised 9 March 2022
  • Accepted 21 March 2023
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