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Superfluid weight in the isolated band limit within the generalized random phase approximation
Minh Tam, Sebastiano Peotta
The superfluid weight of a generic lattice model with attractive Hubbard interaction is computed analytically in the isolated band limit within the generalized random phase approxi…
Quantum geometry in superfluidity and superconductivity
Sebastiano Peotta, Kukka-Emilia Huhtinen, Päivi Törmä
We review the theoretical description of the role of quantum geometry in superfluidity and superconductivity of multiband systems, with focus on flat bands where quantum geometry i…
Signatures of many-body localization of quasiparticles in a flat band superconductor
Koushik Swaminathan, Poula Tadros, Sebastiano Peotta
We construct a class of exact eigenstates of the Hamiltonian obtained by projecting the Hubbard interaction term onto the flat band subspace of a generic lattice model. These exact…