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Article

Quantum State Evolution in an Environment of Cosmological Perturbations

Institute of Theoretical Physics, University of Wroclaw, Plac Maxa Borna 9, 50-204 Wroclaw, Poland
Academic Editor: Stefano Bellucci
Universe 2021, 7(5), 117; https://doi.org/10.3390/universe7050117
Received: 31 March 2021 / Revised: 19 April 2021 / Accepted: 20 April 2021 / Published: 21 April 2021
(This article belongs to the Special Issue Cosmological Models, Quantum Theories and Astrophysical Observations)
We study the pure and thermal states of quantized scalar and tensor perturbations in various epochs of Universe evolution. We calculate the density matrix of non-relativistic particles in an environment of these perturbations. We show that particle’s motion can be described by a stochastic equation with a noise coming from the cosmological environment. We investigate the squeezing of Gaussian wave packets in different epochs and its impact on the noise of quantized cosmological perturbations. View Full-Text
Keywords: geodesic equation; quantum gravity; gravitational environment; squeezed quantum states; stochastic equations geodesic equation; quantum gravity; gravitational environment; squeezed quantum states; stochastic equations
MDPI and ACS Style

Haba, Z. Quantum State Evolution in an Environment of Cosmological Perturbations. Universe 2021, 7, 117. https://doi.org/10.3390/universe7050117

AMA Style

Haba Z. Quantum State Evolution in an Environment of Cosmological Perturbations. Universe. 2021; 7(5):117. https://doi.org/10.3390/universe7050117

Chicago/Turabian Style

Haba, Zbigniew. 2021. "Quantum State Evolution in an Environment of Cosmological Perturbations" Universe 7, no. 5: 117. https://doi.org/10.3390/universe7050117

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