Over two decades of development since its establishment, the axion quark nugget (AQN) is one of the best-studied macroscopic dark matter candidate with characteristic mass and size of order grams and 0.1 μm respectively. It naturally explains the observed similarity between the dark and visible density in the Universe, i.e. ΩDM ∼ Ωvis, with no fitting parameters, while many conventional dark matter candidates such as the weakly interacting massive particles (WIMPs) and axion do not. This dissertation presents numerous latest key progress of the AQN model, including its formation mechanism in early Universe, and new search strategies such as axion detection and global network. Lastly, we discuss potential evidence of AQNs from the anomalous events recently observed by the Telescope Array(TA) and ANtarctic Impulse Transient Antenna (ANITA) experiments.
Add to Calendar
2022-04-12T10:00:002022-04-12T13:00:00PhD defense Xunyu Liang - "Dark Matter in Form of Axion Quark Nuggets: Formation, Detections, and Evidence"Event Information:
Over two decades of development since its establishment, the axion quark nugget (AQN) is one of the best-studied macroscopic dark matter candidate with characteristic mass and size of order grams and 0.1 μm respectively. It naturally explains the observed similarity between the dark and visible density in the Universe, i.e. ΩDM ∼ Ωvis, with no fitting parameters, while many conventional dark matter candidates such as the weakly interacting massive particles (WIMPs) and axion do not. This dissertation presents numerous latest key progress of the AQN model, including its formation mechanism in early Universe, and new search strategies such as axion detection and global network. Lastly, we discuss potential evidence of AQNs from the anomalous events recently observed by the Telescope Array(TA) and ANtarctic Impulse Transient Antenna (ANITA) experiments.Event Location:
https://ubc.zoom.us/j/68698080843?pwd=cEJ3S283RENpSWROR0I3a0lzbkY2dz09