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cond-mat.str-el2026
Finite-size effects and interaction-driven crossovers in quarter-filled attractive Hubbard model: Exact diagonalization, DMRG and machine-learning analysis
Md Fahad Equbal, M. A. H. Ahsan, Satoru Hayami
We investigate the quarter-filled attractive Hubbard model on finite-width cylindrical lattices using exact diagonalization (ED), density-matrix renormalization group (DMRG) and un…
cond-mat.str-el2026
Emergence of correlation-driven altermagnetism in Hubbard model on geometrically frustrated lattice-clusters
Md Fahad Equbal, M. A. H. Ahsan
We investigate the emergence of correlation-driven altermagnetism in simple and extended Hubbard model on geometrically frustrated lattice-clusters using exact diagonalization. By…