Axions were originally proposed to solve the strong CP problem and are among the leading candidates for ultralight dark matter in cosmology. In contrast to particle-like dark matter candidates such as Weakly Interacting Massive Particles (WIMPs) and Freeze-In Massive Particles (FIMPs), axions and axion-like particles can be described as a classical field. This behavior arises from their large...
Axions were originally proposed to solve the strong CP problem and are among the leading candidates for ultralight dark matter in cosmology. In contrast to particle-like dark matter candidates such as Weakly Interacting Massive Particles (WIMPs) and Freeze-In Massive Particles (FIMPs), axions and axion-like particles can be described as a classical field. This behavior arises from their large...
