Localized-basis formulation of interacting Hamiltonians in flat topological bands: coherent states and coherent-like states for fractional physics
This paper proposes a unified framework for describing fractional quantum Hall systems and fractional Chern insulators by extending the concept of coherent states to Chern bands via "coherent-like states," enabling the construction of a localized-basis Hamiltonian that exhibits topological degeneracy and zero-energy ground states across both systems.