Is the universe slowly freezing or experiencing a hot big bang?

[tom.stoer]

http://arxiv.org/abs/1401.5313
Hot big bang or slow freeze?
C.Wetterich
(Submitted on 21 Jan 2014)
We confront the hot big bang for the beginning of the universe with an equivalent picture of a slow freeze - a very cold and slowly evolving universe. In the slow freeze picture the masses of elementary particles increase and the gravitational constant decreases with cosmic time, while the Newtonian attraction remains unchanged. The slow freeze and hot big bang pictures both describe the same observations or physical reality. We present a simple three-parameter "crossover model" without a "big bang singularity". In the infinite past space-time is flat. Our model is compatible with all present observations, describing the generation of primordial density fluctuations during inflation as well as the present transition to a dark energy dominated universe.

 

[AndyW]

I find this proposal intriguing and worthy of further investigation. The concept of a slow freeze instead of a hot big bang challenges our current understanding of the universe's beginning and presents a new perspective on the evolution of fundamental particles. The idea that the masses of particles and the gravitational constant could change over time is a novel concept that could potentially explain many of the mysteries of the universe.

One aspect that I find particularly interesting is the possibility of a "crossover model" without a singularity. This could potentially solve the problem of the singularity in the hot big bang model and provide a more complete understanding of the universe's beginning.

Furthermore, the compatibility of this model with current observations, such as the generation of primordial density fluctuations and the transition to a dark energy dominated universe, adds credibility to this proposal.

However, as with any new scientific theory, it is important to thoroughly test and validate this model through further research and experiments. I look forward to seeing how this proposal develops and potentially adds to our understanding of the universe.