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Uniqueness of the Fock quantization of scalar fields in a Bianchi I cosmology with unitary dynamics
Jerónimo Cortez, Beatriz Elizaga Navascués, Mercedes Martín-Benito +3
The Fock quantization of free scalar fields is subject to an infinite ambiguity when it comes to choosing a set of annihilation and creation operators, choice that is equivalent to…
Dirac fields in flat FLRW cosmology: Uniqueness of the Fock quantization
Jerónimo Cortez, Beatriz Elizaga Navascués, Mercedes Martín-Benito +2
We address the issue of the infinite ambiguity that affects the construction of a Fock quantization of a Dirac field propagating in a cosmological spacetime with flat compact secti…
Uniqueness of the Fock quantization of Dirac fields in 2+1 dimensions
Jerónimo Cortez, Beatriz Elizaga Navascués, Mercedes Martín-Benito +2
We study the Fock quantization of a free Dirac field in 2+1-dimensional backgrounds which are conformally ultrastatic, with a time-dependent conformal factor. As it is typical for…
Unique Fock quantization of a massive fermion field in a cosmological scenario
Jerónimo Cortez, Beatriz Elizaga Navascués, Mercedes Martín-Benito +2
It is well known that the Fock quantization of field theories in general spacetimes suffers from an infinite ambiguity, owing to the inequivalent possibilities in the selection of…