22–26 Jun 2025
Goerlitz & HZDR Dresden
Europe/Berlin timezone

Can rotation solve the Hubble Puzzle?

24 Jun 2025, 12:00
30m

Speaker

Dr Gergely Barnaföldi (HUN-REN Wigner Research)

Description

The discrepancy between low and high redshift Hubble constant $H_0$
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 $ω_0\simeq 2\times 10^{−3}$ 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.

Primary author

Dr Gergely Barnaföldi (HUN-REN Wigner Research)

Co-authors

Balázs Endre Szigeti Imre Ferenc Barna István Szapudi

Presentation materials