CREMASCHINI, Claudio and Massimo TESSAROTTO. Quantum-Gravity Stochastic Effects on the de Sitter Event Horizon. Entropy. 2020, vol. 22, No 6, p. "696-1"-"696-22", 22 pp. ISSN 1099-4300. Available from: https://dx.doi.org/10.3390/e22060696.
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Basic information
Original name Quantum-Gravity Stochastic Effects on the de Sitter Event Horizon
Authors CREMASCHINI, Claudio (380 Italy, belonging to the institution) and Massimo TESSAROTTO (380 Italy, belonging to the institution).
Edition Entropy, 2020, 1099-4300.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10300 1.3 Physical sciences
Country of publisher Switzerland
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19630/20:A0000076
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.3390/e22060696
UT WoS 000551240100001
Keywords in English covariant quantum gravity; cosmological constant; de Sitter space-time; event horizon; stochastic effects; Hawking temperature
Tags FÚ, FÚ2020, RIV21
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 23/3/2021 22:00.
Abstract
The stochastic character of the cosmological constant arising from the non-linear quantum-vacuum Bohm interaction in the framework of the manifestly-covariant theory of quantum gravity (CQG theory) is pointed out. This feature is shown to be consistent with the axiomatic formulation of quantum gravity based on the hydrodynamic representation of the same CQG theory developed recently. The conclusion follows by investigating the indeterminacy properties of the probability density function and its representation associated with the quantum gravity state, which corresponds to a hydrodynamic continuity equation that satisfies the unitarity principle. As a result, the corresponding form of stochastic quantum-modified Einstein field equations is obtained and shown to admit a stochastic cosmological de Sitter solution for the space-time metric tensor. The analytical calculation of the stochastic averages of relevant physical observables is obtained. These include in particular the radius of the de Sitter sphere fixing the location of the event horizon and the expression of the Hawking temperature associated with the related particle tunneling effect. Theoretical implications for cosmology and field theories are pointed out.
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