%0 Journal Article
%A Álvarez Domínguez, Álvaro
%A Ruiz Cembranos, José Alberto
%A Garay Elizondo, Luis Javier
%A Martín Benito, Mercedes
%A Parra López, Álvaro
%A Sánchez Velázquez, José Manuel
%T Operational realization of quantum vacuum ambiguities
%D 2023
%@ 2470-0010
%@ 2470-0029
%U https://hdl.handle.net/20.500.14352/103070
%X 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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