Phase Transitions Out of Quantum Hall States in Moiré TMD Bilayers

Watch a detailed physics seminar from Harvard CMSA's Topological Quantum Matter series exploring phase transitions in quantum Hall states within moiré TMD bilayers. Delve into unconventional phase transitions between quantum Hall phases and Fermi liquids or charge ordered phases as bandwidth is tuned. Learn about the direct transition between Fractional Quantum Anomalous Hall state and Charge Density Wave insulator at filling -2/3, examining critical theory similarities to deconfined quantum critical points with Chern-Simons modifications. Explore continuous transitions between composite Fermi liquid and Fermi liquid at filling -1/2, understanding how translation symmetry enables second-order transitions and the role of critical CDW fluctuations. Examine the implications of disorder, including pinned CDW order and intermediate electrically insulating phases, while discovering potential new avenues for realizing deconfined criticality and fractionalized phases in moiré Chern band systems.