Do we live in the universe successively dominated by matter and antimatter?

TL;DR

This paper proposes a cyclic universe model where matter and antimatter dominate alternately, driven by a hypothetical matter-antimatter repulsion inside black holes, potentially eliminating the need for inflation and CP violation explanations.

Contribution

It introduces a novel mechanism for matter-antimatter transformation during black hole collapse, challenging existing cosmological models and suggesting a cyclic universe without singularities or inflation.

Findings

A hypothetical matter-antimatter repulsion could enable rapid matter-antimatter conversion.

Black hole dynamics could produce a matter-antimatter cycle, avoiding singularities.

The model explains matter dominance without CP violation or inflation.

Abstract

We wonder if a cyclic universe may be dominated alternatively by matter and antimatter. Such a scenario demands a mechanism for transformation of matter to antimatter (or antimatter to matter) during the final stage of a big crunch. By giving an example, we have shown that in principle such a mechanism is possible. Our mechanism is based on a hypothetical repulsion between matter and antimatter, existing at least deep inside the horizon of a black hole. When universe is reduced to a supermassive black hole of a small size, a very strong field of the conjectured force might create (through a Schwinger type mechanism) particle-antiparticle pairs from the quantum vacuum. The amount of antimatter created from the vacuum is equal to the decrease of mass of the black hole and violently repelled from it. When the size of the black hole is sufficiently small, the creation of antimatter may become so fast, that matter of our Universe might be transformed to antimatter in a fraction of second. Such a fast conversion of matter into antimatter may look as a Big Bang. Our mechanism prevents a singularity; a new cycle might start with an initial size more than 30 orders of magnitude greater than the Planck length, suggesting that there is no need for inflationary scenario in Cosmology. In addition, there is no need to invoke CP violation for explanation of matter-antimatter asymmetry. Simply, our present day Universe is dominated by matter, because the previous universe was dominated by antimatter.