Physics
Sunny Vagnozzi
What is the Hubble tension, really? A ...

My thoughts on what the Hubble tension really is, based on George Efstathiou’s “To H0 or not to H0?“, arXiv:2103.08723.

What is the Hubble tension, really? A SH0ES-centric view of the problem

Fifth forces

Top arXiv papers from Week 39, 2020

Top arXiv papers from Week 39, 2020

This week’s entry is entirely dedicated to dark matter and ways of searching for or constraining its properties which I would define “off the beaten track”, ranging from using the first stars, to black hole shadows, to quantum gravity-inspired theoretical guiding principles. Enjoy!

Top arXiv papers from Week 14, 2020

Top arXiv papers from Week 14, 2020

This week’s entry features a new ACT CMB lensing cross BOSS CMASS galaxies cross-correlation measurement implementing a new tSZ-cleaning procedure, a new update on the H0 tension and in particular how fifth forces could lower the TRGB-calibrated measurement (besides the usual Cepheid-calibrated one), and finally the return of black hole shadows (in asymptotically de Sitter spacetime). Enjoy and stay safe!