Generalizes LSM theorem to hyperbolic lattices with Fuchsian symmetry and derives lower bound on ground-state degeneracy versus filling and geometry.
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Impurities in a flat Chern band induce a thermal crossover from fractional to integer Chern insulators via entropy-energy competition, supported by exact diagonalization in a toy model.
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Lieb-Schultz-Mattis constraints for hyperbolic lattices
Generalizes LSM theorem to hyperbolic lattices with Fuchsian symmetry and derives lower bound on ground-state degeneracy versus filling and geometry.
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Impurity-induced thermal crossover in fractional Chern insulators
Impurities in a flat Chern band induce a thermal crossover from fractional to integer Chern insulators via entropy-energy competition, supported by exact diagonalization in a toy model.