TASI Lectures on the Strong CP Problem and Axions

Understand

These TASI lectures where given in 2018 and provide an introduction to the Strong CP problem and the axion.

• I start by introducing the Strong CP problem from both a classical and a quantum mechanical perspective, calculating the neutron eDM and discussing the $\theta$ vacua.
• Next, I review the various solutions and discuss the active areas of axion model building.
• Finally, I summarize various experiments proposed to look for these solutions.