This week’s post covers a new measurement of H0 from fast radio bursts, a new compressed low-multipole Planck likelihood, and the first detailed study of the impact of the mass-sheet degeneracy in gravitational wave lensing. Enjoy!
Top arXiv papers from Week 12, 2021
What is the Hubble tension, really? A SH0ES-centric view of the problem
My thoughts on what the Hubble tension really is, based on George Efstathiou’s “To H0 or not to H0?“, arXiv:2103.08723.
Top arXiv papers from Week 10, 2021
After being “away” a few weeks where I used this blog as a conference diary (see TMCC2021 and A (Hubble) Tension Headache), the usual arXiv posts return, covering primordial black holes as (not) dark matter, difficulties in constructing working and realistic early dark energy models, and biases to parameter constraints from the effect of baryonic feedback on the gravitational lensing of the CMB. Enjoy the read!
Top arXiv papers from Week 6, 2021
Top arXiv papers from Week 49, 2020
Top arXiv papers from Week 48, 2020
This week’s entry looks at the first measurement of the cosmic birefringence angle from the CMB, the generation of large primordial non-Gaussianity from Higgs-induced modulated reheating, and a quasi-model-independent inference of the Hubble constant and the late-time expansion. Happy Thanksgiving to my American readers!
Top arXiv papers from Week 29, 2020
Top arXiv papers from Week 21, 2020
This week’s entry features the return of the Hubble tension, the first discussion in this blog on the lensing anomaly (Alens tension), and for the second time a discussion on cross-correlations between ultra-high energy cosmic rays and large-scale structure (this time done on real data). As a totally random observation, all three papers discussed this week feature authors which already appeared earlier in this blog. Misha Ivanov already featured on Week 7 (#2), Julien Lesgourgues already featured on Week 11 (again #1!), Marc Kamionkowski already featured on Week 16 (#3), Avi Loeb already featured on Week 15 (#3), and Pavel Motloch already featured with another single-author paper on Week 17 (#3). And no, this is a totally random observation and I’m not trying to imply anything about these authors or the quality of their work (you might want to read my welcome post disclaimers once again), but rather you might start to see some interesting patterns regarding the type of works I am interested in. Enjoy!
Top arXiv papers from Week 17, 2020
With a week of delay due to Italian bureaucracy-induced commitments, my Week 17 summaries are now out. There is a new entry in terms of topics covered, i.e. the thorny issue of naturalness in particle physics and cosmology (besides two papers covering limits on the duration of inflation, and independent inferences of the baryon energy density from Planck). As always, comments are very welcome!