2026-06-27T16:04:10Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/730482023-08-28T02:11:34Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Álvarez Domínguez, Álvaro
author
Garay Elizondo, Luis Javier
author
Martín Benito, Mercedes
2023-06-22T12:41:17Z
2023-06-22T12:41:17Z
2022-06-21
2470-0010
10.1103/PhysRevD.105.125012
https://hdl.handle.net/20.500.14352/73048
http://dx.doi.org/10.1103/PhysRevD.105.125012
https://journals.aps.org/
The loss of time-translational invariance caused by a time-dependent external agent leads to particle creation effects in quantum field theory. This phenomenon results in ambiguities when selecting the quantum vacuum of the canonical quantization. In this work we analyze how the time evolution of the number of created particles depends on these ambiguities when external agents are spatially homogeneous. In particular, we generalize the standard quantum Vlasov equation in order to accommodate in its formulation the possibility of having different choices of vacuum, including adiabatic vacua. This study leads us to propose a new physical criterion stronger than the unitary implementation of the dynamics in order to reduce the quantization ambiguities.
eng
Generalized quantum Vlasov equation for particle creation and unitary dynamics
journal article
URL
https://docta.ucm.es/bitstreams/2713ad85-d42f-4af9-bc9a-47322b98d87e/download
File
MD5
0729b7cb478d40a834fbe45da796fae7
330311
application/pdf
Garay 51 libre.pdf