Flavoured axion-like particles

Flavoured axion-like particles

by | Sep 26, 2019 | Events, Talk

Flavoured axion-like particles Pseudo Nambu-Goldstone bosons (also known as axion-like particles) with flavour-violating couplings to the Standard Model (SM) fermions are a generic consequence of spontaneously-broken global U(1) symmetries, if the SM fermions carry...
The first image of a black hole

The first image of a black hole

by | Sep 25, 2019 | Events, Talk

The first image of a black hole I will briefly discuss how the first image of a black hole was obtained by the EHT collaboration. In particular, I will describe the theoretical aspects that have allowed us to model the dynamics of the plasma accreting onto the black...
Spin of primordial black holes

Spin of primordial black holes

by | Sep 19, 2019 | Events, Talk

Spin of primordial black holes We discuss the spin of primordial black holes (PBH) formed during radiation domination under the assumption of Gaussian statistics. They are formed by the collapse of rare fluctuations. We argue that their angular momentum is quadratic...
Higher spin motivated theories (of gravity)

Higher spin motivated theories (of gravity)

by | Sep 13, 2019 | Events, Talk

Higher spin motivated theories (of gravity) Despite the continuing efforts, we cannot be truly satisfied with our understanding of the physics in the UV (short distance) limit. The manifestation is that there is no broadly accepted model of quantum gravity. For this...
Studying the Expansion of the Universe with quasar spectra

Studying the Expansion of the Universe with quasar spectra

by | Sep 13, 2019 | Events, Talk

Studying the Expansion of the Universe with quasar spectra From 2009 to 2014, the Baryon Oscillation Spectroscopic Survey (BOSS) used the SDSS telescope to obtain spectra of 1.5 million galaxies to get very accurate measurements of the Baryon Acoustic Oscillations...