Hydrodynamic Vacuum Sources of Dark Matter Self-Generation in Accelerated Universe without Big Bang
S. G. Chefranov, E. A. Novikov

TL;DR
This paper generalizes hydrodynamic vacuum theory within general relativity, proposing a new model for dark matter self-generation that explains cosmic acceleration without a Big Bang singularity, aligning well with observations.
Contribution
It introduces an exact, parameter-free solution for dark matter production from vacuum, addressing cosmological constant issues and predicting universe stability up to 38 billion years.
Findings
Stable dark matter production solution during universe expansion
Agreement with supernova, galaxy, and acceleration data
Prediction of universe contraction and dark matter absorption phase
Abstract
We have obtained a generalization of the hydrodynamic theory of vacuum in the context of general relativity. While retaining the Lagrangian character of general relativity, the new theory provides a natural alternative to the view that the singularity is inevitable in general relativity and in the theory of a hot Universe. We show that the macroscopic source-sink motion of the ordinary (dark) matter during production-absorption of particles by vacuum generates polarization (determining the variability of the cosmological term in general relativity). We have removed the well-known problems of the cosmological constant by refining the physical nature of dark energy associated precisely with this hydrodynamically initiated variability of the vacuum energy density. A new exact solution of the modified general relativity equations that contains no free (fitting) parameter (additional to…
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