FURTHER EXPLORATION

**Introductory**: Read the Nobel Prize organization’s explainer on strange states of matter**Advanced**: Watch Nobel Prize-winner Duncan Haldane’s 2014 Perimeter lecture: “Geometry of topological matter: some examples”**Advanced**: Watch Haldane’s 2013 lecture “Geometry and Topology in the Fractional Quantum Hall Effect”**Advanced**: Watch Haldane’s 2013 lecture “Geometry and the entanglement spectrum in the fractional quantum Hall effect”**Related**: Perimeter researchers continue to push our understanding of topology, topological insulators, and new phases of matter