628 citations · 2.6k across the 33 of their papers we have counts for
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Band geometry, Berry curvature and superfluid weight
Long Liang, Tuomas I. Vanhala, Sebastiano Peotta +3
We present a theory of the superfluid weight in multiband attractive Hubbard models within the Bardeen-Cooper-Schrieffer (BCS) mean field framework. We show how to separate the geo…
Effective theory and emergent symmetry in the flat bands of attractive Hubbard models
Murad Tovmasyan, Sebastiano Peotta, Päivi Törmä +1
In a partially filled flat Bloch band electrons do not have a well defined Fermi surface and hence the low-energy theory is not a Fermi liquid. Neverethless, under the influence of…
Geometric origin of superfluidity in the Lieb lattice flat band
Aleksi Julku, Sebastiano Peotta, Tuomas Vanhala +2
The ground state and transport properties of the Lieb lattice flat band in the presence of an attractive Hubbard interaction are considered. It is shown that the superfluid weight…