My thoughts on what the Hubble tension really is, based on George Efstathiou’s “To H0 or not to H0?“, arXiv:2103.08723.
End of the week wrap-up, which discusses how early dark energy runs into trouble when confronted against large-scale structure full-shape galaxy power spectrum data (with a social injustice metaphor related to bad practices when trying to solve the H0 tension), the puzzling origin of GW190814, and a good ambulance chasing paper which turns XENON1T into a machine to set precise constraints on non-standard neutrino interactions.
For a change, no H0 tension in this week’s entry (although I briefly touch on a new H0 measurement in paper 1)! This week I cover a new way to measure cosmological distances, a new dark matter candidate from an alternative to black holes, and the first calculation of how the neutrino Casimir force depends on the Dirac vs Majorana nature of neutrinos. Enjoy, and stay at home!
