Quantum dynamics of early Universe
Sergei P. Maydanyuk

TL;DR
This paper introduces stable quantum definitions of cosmological parameters for the early universe, demonstrating high accuracy and classical-quantum correspondence, enabling insights into pre-Big Bang quantum dynamics.
Contribution
It proposes new stable quantum definitions for cosmological parameters and validates them through fully quantum calculations, bridging classical and quantum descriptions of the early universe.
Findings
High precision agreement between classical and quantum calculations after Big Bang formation
Proposed definitions are stable and easy to use in quantum cosmology
Quantum information about the universe's early stages can be obtained before Big Bang
Abstract
In order to study quantum dynamics of the FRW-universe of closed type, definitions of velocity, Hubble function and duration of the evolved universe are introduced into cosmology. The proposed definitions are characterized by high stability of calculations and easy for use. The introduced characteristics are supported by calculations of wave function in the fully quantum (non-semiclassical) approach. We achieve high precision agreement between the classical and quantum calculations after the formation of Universe with classical spacetime (i.e. Big Bang). Such an agreement confirms efficiency of the proposed definitions, and classical-quantum correspondence allows to obtain quantum information before Big Bang, to study dynamics of evolution of universe in the first stage and later times.
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Taxonomy
TopicsCosmology and Gravitation Theories · Black Holes and Theoretical Physics · Relativity and Gravitational Theory
