Daniel Arovas - Quantum Magnetism from the Iron Age to Today

The quantum theory of magnetism has provided many durable paradigms for quantum phases of matter, including intrinsically quantum disordered states, symmetry-protected topological phases, and quantum spin liquids. It also served as a birthing ground for many important developments in the theory of quantum phase transitions. In this lecture, I will review some of the history and highlights of this very rich field.