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arXiv · 2303.07436

Operational realization of quantum vacuum ambiguities

Álvaro Álvarez-Domínguez·José A. R. Cembranos·Luis J. Garay·Mercedes Martín-Benito·Álvaro Parra-López·Jose M. Sánchez Velázquez
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Abstract

We provide a reinterpretation of the quantum vacuum ambiguities that one encounters when studying particle creation phenomena due to an external and time-dependent agent. We propose a measurement-motivated understanding: Each way of measuring the number of created particles selects a particular vacuum. This point of view gives a clear and physical meaning to the time evolution of the number of particles produced by the agent as the counts in a specific detector and, at the same time relates commonly used quantization prescriptions to particular measurement setups.

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Álvaro Álvarez-Domínguez, José A. R. Cembranos, Luis J. Garay, Mercedes Martín-Benito, Álvaro Parra-López, Jose M. Sánchez Velázquez. 2023-03-13. Operational realization of quantum vacuum ambiguities. https://doi.org/10.1103/physrevd.108.065008

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