Entropy and Symmetry in the Universe

Book chapter, 2023

Professor Rigopoulou presents two topics that are central to physics, symmetry, and entropy. The role of symmetry is mentioned in the context of conservation laws, as well as the discovery of Gell-Mann’s eightfold way. Rigopoulou describes charge, parity, and time-translation symmetries that were once thought to be true. She then considers whether combinations of these symmetries hold as well like charge–parity symmetry combined. On entropy, she discusses the arrow of time.