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cond-mat.supr-con2026
Emergent BEC mechanism in flat-band superconductors
V. Berger, I. S. Tupitsyn, B. Currie +3
The formation of bound bosonic pairs of fermions, followed by their Bose-Einstein (quasi) condensation (BEC), is a foundational mechanism of superconductivity. At low filling, flat…
cond-mat.quant-gas2026★ 1 cited
Low-temperature Depletion of Superfluid Density in the Absence of Galilean Symmetry
Viktor Berger, Nikolay Prokof'ev, Boris Svistunov
Landau theory of superfluidity associates low-temperature flow of the normal component with the phonon wind. This picture does not apply to superfluids in which Galilean invariance…