Julius Edgar Lilienfeld Prize: Lilienfeld Prize Lecture: Emergent Behavior in Quantum Matter

We live in an \textbf{\textit{emergent universe}} in which interactions between the basic building blocks of matter and their environment give rise to unpredicted and unexpected \textbf{\textit{emergent}} behavior at every scale. As physicists we seek to identify the organizing principles responsible for that behavior, construct soluble models that incorporate these, and explain experiment. In this lecture, I illustrate this approach to understanding emergent behavior in quantum matter through three examples: collective modes in electron, helium, and nuclear liquids; the emergence of superconductivity in conventional and unconventional superconductors, nuclei, and neutron stars; and the emergence of heavy electrons in Kondo lattice materials.