Principles of Physics IV
An axion is a hypothetical elementary particle that is proposed as a solution to the strong CP problem in quantum chromodynamics (QCD). It is a type of scalar particle that is also thought to be a candidate for dark matter, potentially contributing to the mass of the universe while being extremely light and weakly interacting. The existence of axions could help bridge gaps in current understanding and provide insights into fundamental physics beyond the standard model.
congrats on reading the definition of axion. now let's actually learn it.