@misc{10481/88051,
year = {2011},
month = {8},
url = {https://hdl.handle.net/10481/88051},
abstract = {A major problem in the quantization of fields in curved spacetimes is the ambiguity in the choice of a Fock representation for the canonical commutation relations. There exists an infinite number of choices leading to different physical predictions. In stationary scenarios, a common strategy is to select a vacuum (or a family of unitarily equivalent vacua) by requiring invariance under the spacetime symmetries. When stationarity is lost, a natural generalization consists in replacing time invariance by unitarity in the evolution. We prove that, when the spatial sections are compact, the criterion of a unitary dynamics, together with the invariance under the spatial isometries, suffices to select a unique family of Fock quantizations for a scalar field with time dependent mass.},
title = {A uniqueness criterion for the Fock quantization of scalar fields with time dependent mass},
doi = {https://doi.org/10.1088/0264-9381/28/17/172001},
author = {Cortez, Jerónimo and Mena Marugán, Guillermo A. and Olmedo Nieto, Javier Antonio and Velhinho, Jose M.},
}