Coleman-Mandula theorem

The Coleman-Mandula theorem is a fundamental result in theoretical physics, particularly in the field of quantum field theory. It states that the symmetries of particle physics cannot combine the spatial symmetries (like rotation and translation) with internal symmetries (like charge or spin) in a way that creates a unified framework without losing some essential features. Essentially, it limits how symmetries can mix, suggesting that any consistent theory of particle interactions must respect this structure. This has significant implications for the development of unified theories in physics, such as the search for a theory of everything.