In the Hatsugai-Kohmoto model, Fermi surface topology transitions quantified by Fermi sea volume and Euler characteristic unify metal-insulator and Lifshitz transitions under a robust universality class, with gapless phases identified as Landau Fermi liquids.
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Padé approximation reduces the polynomial degree and computation time for accurate critical temperature estimates from Fisher zeros in 2D Ising and XY models.
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Pad\'e Approximation and Partition Function Zeros
Padé approximation reduces the polynomial degree and computation time for accurate critical temperature estimates from Fisher zeros in 2D Ising and XY models.