What would be outcome of a Big Crunch?

TL;DR

This paper proposes that a repulsive gravitational force between matter and antimatter could cause a Big Crunch to transform into a new Big Bang, potentially explaining the matter-antimatter asymmetry without CP violation.

Contribution

It introduces the hypothesis of gravitational repulsion between matter and antimatter and explores its implications for universe cycles and matter-antimatter asymmetry.

Findings

A new force of matter-antimatter repulsion is hypothesized.

A collapsing universe could generate a new universe dominated by antimatter.

Matter may transform into antimatter rapidly during a Big Crunch, resembling a Big Bang.

Abstract

I suggest the existence of a still undiscovered interaction: repulsion between matter and antimatter. The simplest and the most elegant candidate for such a force is gravitational repulsion between particles and antiparticles. I argue that such a force may give birth to a new Universe; by transforming an eventual Big Crunch of our universe, to an event similar to Big Bang. In fact, when a collapsing Universe is reduced to a supermassive black hole of a small size, a very strong field of the conjectured force may create particle-antiparticle pairs from the surrounding vacuum. The amount of the antimatter created from the physical vacuum is equal to the decrease of mass of "black hole Universe" and violently repelled from it. When the size of the black hole is sufficiently small the creation of antimatter may become so huge and fast, that matter of our Universe may disappear in a fraction of the Planck time. So fast transformation of matter to antimatter may look like a Big Bang with the initial size about 30 orders of magnitude greater than the Planck length, questioning the need for inflation. In addition, a Big Crunch, of a Universe dominated by matter, leads to a new Universe dominated by antimatter, and vice versa; without need to invoke CP violation as explanation of matter-antimatter asymmetry. Simply, our present day Universe is dominated by matter, because the previous Universe was dominated by antimatter.