The term "fifth force" in physics refers to a hypothetical fundamental force beyond the four known forces: gravitational, electromagnetic, strong nuclear, and weak nuclear forces. The idea of a fifth force arises in various theoretical frameworks, particularly in attempts to explain phenomena that cannot be accounted for by existing models. The concept of a fifth force has been the subject of numerous scientific investigations and theories, particularly in the context of cosmology and particle physics.
New to topics? Read the docs here!