https://doi.org/10.1140/epjc/s10052-024-13449-3
Regular Article
Preserving quantum information in f(Q) non-metric gravity cosmology
1
Università degli Studi di Napoli “Federico II”, Dipartimento di Fisica “Ettore Pancini”, Complesso Universitario di Monte S. Angelo, Via Cinthia Edificio 6, 80126, Naples, Italy
2
Scuola Superiore Meridionale, Largo San Marcellino 10, 80138, Naples, Italy
3
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cinthia Edificio 6, 80126, Naples, Italy
4
Al-Farabi Kazakh National University, Al-Farabi av. 71, 050040, Almaty, Kazakhstan
5
School of Science and Technology, University of Camerino, Via Madonna delle Carceri 9, 62032, Camerino, Italy
6
SUNY Polytechnic Institute, 13502, Utica, NY, USA
7
Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Perugia, Via A. Pascoli, 06123, Perugia, Italy
8
INAF-Osservatorio Astronomico di Brera, Milan, Italy
Received:
10
August
2024
Accepted:
29
September
2024
Published online:
18
October
2024
The effects of cosmological expansion on quantum bosonic states are investigated, using quantum information theory. In particular, a generic Bogoliubov transformation of bosonic field modes is considered and the state change on a single mode is regarded as the effect of a quantum channel. Properties and capacities of this channel are thus explored in the framework of f(Q) non-metric gravity. The reason is that non-metric gravity can be considered under the standard of gauge theories with all the advantages of such a formulation. As immediate result, we obtain that the information on a single-mode state appears better preserved, whenever the number of particles produced by the cosmological expansion is small. Specifically, we investigate a power law f(Q) model, leaving unaltered the effective gravitational coupling, and minimise the corresponding particle production. We thus show how to optimise the preservation of classical and quantum information, stored in bosonic mode states in the remote past. Finally, we compare our findings with those obtained in General Relativity.
© The Author(s) 2024
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