Research Interests

I am broadly interested in theoretical condensed matter physics and its applications to materials science. My current focus includes:

• Machine learning methods in material discovery

• Moiré flat bands in twisted multilayers, particularly:

  • Band topology,

  • Quantum geometry,

  • Associated physical responses.

I also have experience in Luttinger liquid theory and band topology in the projected spectrum, and maintain an interest in non-equilibrium systems.

Profile

• Ph.D. Candidate. Department of Physics, Northeastern University
• Ph.D. Advisor: Prof. Arun Bansil
• Office: Elliott Hall 130 (Quantum Material and Sensing Institute, Burlington, MA)
• Email: hung.yi@northeastern.edu
• Recent Preprints on arXiv
• Google Scholar
• GitHub

News

• 2026-03-23: A new preprint “Twist-Induced Quantum Geometry Reconfiguration in Moiré Flat Bands” is posted on arXiv.
• 2026-03-23: A new preprint “Quantum Geometry of Moiré Flat Bands Beyond the Valley Paradigm” is posted on arXiv.
• 2026-03-15: A new preprint “Extending Topological Bound on Quantum Weight Beyond Symmetry-Protected Topological Phases” is posted on arXiv.
• 2026-03-15: A nwe preprint “Nested Feature Spectrum Topology: Tripartite Topological Equivalence of Feature, Entanglement, and Wilson Loop Spectrum” is posted on arXiv.
• 2026-02-10: An invited talk “More is different at the edge: helical Luttinger liquid in double quantum spin Hall insulators” is given at Institute of Physics, Academia Sinica.
• 2025-11-20: A new paper “Tunable competing electronic orders in double quantum spin Hall superlattices” is published on Physical Review B.
• 2025-11-07: A contributing talk “Quantum Geometry Driven Fluctuation Phenomena in Flat-Band Systems” is given at The New England Section of the American Physical Society.
• 2025-11-07: A poster presentation “Generation of Isolated Flat Bands with Tunable Numbers through Moiré Engineering” is given at The New England Section of the American Physical Society.
• 2025-07-14: An invited talk “Quantum Materials and Topology: Toward Robust Platforms for Quantum Computation” is given at Annual Meeting of NSF-ExpandQISE 2: Exotic Physics and Applications of Solid-State Qubits.
• 2025-07-14: A new paper “Geometry-driven moiré engineering in twisted bilayers hosting high-pseudospin fermions” is published on Physical Review B as a Letter.
• 2025-06-20: A new paper “Majorana Kramers pairs in synthetic high-spin Chern insulators” is published on Physical Review B.
• 2025-05-01: A new paper “Topological characteristics and bulk-boundary correspondence in the orbital Hall effect” is published on Physical Review B.

Note: My collaboration with Dr. Hsin Lin ended in 2023. Some previously completed work may still appear in future publications.