Axion Quark Nuggets and Matter-Antimatter asymmetry as two sides of the same coin: theory, observations and future searches

by Prof. Ariel Zhitnitsky (University of British Columbia)

Friday 16 Dec 2022, 09:00 → 10:00 Asia/Shanghai

In this talk, I want to discuss the (unorthodox) scenario when the baryogenesis is replaced by a charge separation process in which the global baryon number of the Universe remains zero. In this, the so-called axion quark nugget (AQN) dark matter model, the unobserved antibaryons come to comprise the dark matter in the form of dense nuggets. In this framework, both types of matter (dark and visible) have the same QCD origin, form at the same QCD epoch, and both proportional to one and the same fundamental dimensional parameter of the system, which explains how the two, naively distinct, problems could be intimately related, and could be solved simultaneously within the same framework. I specifically focus on several recent papers to apply these generic ideas to several recent mysterious and puzzling observations on all scales from galactic scale to solar corona to Earth. The talk will be mostly based on two recent publications:

1. brief review on AQN: 
A.Zhitnitsky,``Axion quark nuggets. Dark matter and matter-antimatter asymmetry: Theory, observations and future experiments,''
Mod. Phys. Lett. A 36, no.18, 2130017 (2021) [arXiv:2105.08719 [hep-ph]].

2. application of the AQN model to the galactic scale: 
A.Zhitnitsky, ``The mysterious diffuse UV radiation and axion quark nugget dark matter model,’' Phys. Lett. B 828, 137015 (2022) [arXiv:2110.05489 [hep-ph]]

Biography:
Professor Ariel (Eric) Zhitnitsky is from the Department of Physics and Astronomy at UBC. Over the years, Eric has made several innovative contributions to particle physics and theoretical physics. In 1980s, he independently introduced an invisible QCD axion model which now is known as the DFSZ model as a solution to the strong CP problem. With V. L. Chernyak, he introduced light-cone wave functions known as the CZ wave functions, and the technique now becomes a basic tool in analyzing high energy exclusive amplitudes. Other influential works include his contribution to the field of quantum anomalies in heavy ion collisions in a pioneering paper (2007) with D. Kharzeev. Eric won the 2018 CAP-CRM Prize in Theoretical and Mathematical Physics.
 

Zoom Meeting: https://cern.zoom.us/j/96357968034?pwd=K2REeGF0V2dqOElRd09hVGVRcDk4Zz09

Zoom：963 5796 8034
pwd：125125

AZ_slides_PKU_221216.pdf