The QCD Axion (Lecture 1) by David Marsh

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 organisers will ask for the reference letters only when it is felt required.
CONTACT US: ltpdm2020@icts.res.in
PROGRAM LINK: https://www.icts.res.in/program/ltpdm2020

Table of Contents (powered by https://videoken.com)
0:00:00 The QCD Axion (Lecture 2)
0:01:00 THE OCD AXION
0:01:33 Selected Reading
0:02:11 The OCD "0-term
0:03:50 CP-violation
0:06:34 Neutron EDM
0:11:16 The Strong-CP problem
0:13:44 Fine tuning in theoretical Physics
0:15:49 Cleaning up the mess
0:20:40 Axion Ingredients
0:23:05 Spontaneous Symmetry Breaking
0:29:37 The PQ Lagrangian
0:35:10 Axion-Fermion Coupling
0:38:41 The Chiral Anomaly
0:58:45 is a dynamical field
1:01:30 QCD Axion Potential
1:06:30 OCD Axion Potential
1:07:54 ChPT and the Axion Mass
1:12:54 DILG and Finite-T
1:15:15 QCD Axion Potential
1:17:04 Lattice QCD and x(T)
1:18:16 QCD Axion Models
1:24:12 QCD Axion Constraints

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