My thoughts on what the Hubble tension really is, based on George Efstathiou’s “To H0 or not to H0?“, arXiv:2103.08723.
This week’s entry deals with new measurements of the Deuterium-to-Helium-3 cross-section with extremely important implications for Big Bang Nucleosynthesis, and two papers on axion-photon conversion (and vice-versa) in astrophysical environments. A heads-up that next week’s blog installment will likely be cancelled due to personal reasons (see here). Enjoy!
This week’s entry discusses a new measurement of the Hubble constant from Type II Supernovae, a map from Poincaré gauge theories to bi-scalar-tensor theories useful for cosmological applications, and a map between fluid and field approaches to interacting dark energy valid at the background and first-order perturbation level.
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!
