A powerful organizing principle to describe and distinguish phases of macroscopic matter is provided by the concepts of broken symmetry and long range order. Modern work in quantum condensed matter physics has however revealed the inadequacy of these concepts in capturing the essence of many different phenomena. A different set of concepts - centered around the notion of quantum entanglement on a macroscopic scale - is proving to be crucial in describing these phenomena. In these lectures I will review the physics of quantum matter characterized by interesting long range quantum entanglement rather than just by long range order. Specific examples I will describe include quantum spin liquid phases in magnetism, non-Fermi liquid metals, and unconventional quantum phase transitions.
Lecture 1: January 13, 2015, 5:00 PM
Lecture 2: January 14, 2015, 5:00 PM
Lecture 3: January 15, 2015, 5:00 PM