PROGRAM
LESS TRAVELLED PATH OF DARK MATTER: AXIONS AND PRIMORDIAL BLACK HOLES (ONLINE)
ORGANIZERS: Subinoy Das (IIA, Bangalore), Koushik Dutta (IISER, Kolkata / SINP, Kolkata), Raghavan Rangarajan (Ahmedabad University) and Vikram Rentala (IIT Bombay)
DATE: 09 November 2020 to 13 November 2020
VENUE: Online
The existence of dark matter (DM) has been inferred from its gravitational interactions, yet the identity of the dark matter particles remains completely unknown. The dominant candidate for DM over the last 30 years has been Weakly Interacting Massive Particles (WIMPs). However, despite extensive underground (direct), telescope (indirect), and collider searches, dedicated experiments have not found any evidence of WIMPs. Meanwhile, several astrophysical small-scale structure and cosmological hints might be an indication that DM has non-gravitational interactions that cannot easily be explained with vanilla WIMPs.
This online workshop on the Less Travelled Path of Dark Matter (LTPDM) will bring together particle physicists and cosmologists from all over the world to address current trends in DM searches, focused on axions and primordial black holes, and map the way forward. The program will also include a school, with lectures addressed to students and postdocs, familiarizing them with new and advanced concepts.
We plan to have a longer physical workshop on dark matter, with a larger perspective, in the near future once the current global pandemic crisis has subsided.
The organizers will ask for the reference letters only when it is felt required.
CONTACT US: ltpdm2020@icts.res.in
PROGRAM LINK: [ Ссылка ]...
Table of Contents (powered by [ Ссылка ])
0:00:00 Recent developments in the physics of PBHs Antonio Risotto
0:00:22 Plan of the talk
0:01:03 Motivation
0:01:31 Assumption:
0:03:34 The PBH mass function at formation
0:04:26 The spin of PBHs at formation is small
0:05:28 PBHs are not clustered at formation
0:06:58 BH binary
0:07:46 PBH evolution
0:08:22 Accretion onto isolated PBHs
0:09:28 Accretion onto PBH binaries
0:11:20 PBH mass function evolution
0:12:19 PBH mass evolution in binaries
0:13:22 PBH spin evolution
0:13:57 Spins pushed towards extremity
0:14:38 Merger rate
0:16:28 Hierarchical Bayesian inference and ML
0:18:23 Prediction for the effective spin distribution
0:19:15 PBH population properties
0:22:02 The LIGO/Virgo events can be all PBHs not the dark matter in the universe
0:23:19 Conclusions
0:26:31 Population posterior distribution
0:28:22 The LIGONVirgo events can be all PBHs not the dark matter in the universe
