Álvarez Domínguez, ÁlvaroRuiz Cembranos, José AlbertoGaray Elizondo, Luis JavierMartín Benito, MercedesParra López, ÁlvaroSánchez Velázquez, José Manuel2024-04-122024-04-122023-09-152470-00102470-002910.1103/physrevd.108.065008https://hdl.handle.net/20.500.14352/1030702023 Descuento SCOAPWe 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.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal articlehttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.065008https://arxiv.org/abs/2303.07436open access539.1Electric FieldQEDDirac EquationPartículas2212.02 Partículas Elementales