Big Bounce

The Big Bounce ( Big rebound ) is a theoretical model of the formation of the universe. It is derived from the model of the oscillating universe. It is assumed that the Big Bang was the result of the collapse ( Big Crunch ) of a previous universe. The term was coined in 1987 by Wolfgang Priester and Hans -Joachim Blome. Current representatives of the Big Bounce theory are Abhay Ashketar and Martin Bojowald.

Motivation

According to the current Big Bang theory, the universe would have to have an infinite density at time zero. Such a description would conflict with the uncertainty principle of quantum mechanics and it because of singularities and the theory of relativity, which would lose their validity on very small length scales in the range of the Planck scale.

The Big Bounce theory is based on a quantization of space-time, thus avoiding the problematic singularities, since all physical quantities can only take finite values ​​.

Expansion and contraction

If the current universe in a Big Crunch end, there should be a follow-up universe. It is assumed that the universe had a first infinite extension and exist without matter. As a result of spontaneous symmetry breaking in the contraction was mass produced.