Saturday, May 31, 2025

Can rotation solve the Hubble Puzzle?

https://academic.oup.com/mnras/article/538/4/3038/8090496?login=false

ABSTRACT

The discrepancy between low and high redshift Hubble constant measurements is the highest significance tension within the concordance Lambda cold dark matter paradigm. If not due to unknown systematics, the Hubble Puzzle suggests a lack of understanding of the universe’s expansion history despite the otherwise spectacular success of the theory. We show that a Gödel inspired slowly rotating dark-fluid variant of the concordance model resolves this tension with an angular velocity today  Gyr−1. Curiously, this is close to the maximal rotation, avoiding closed time-like loops with a tangential velocity less than the speed of light at the horizon.