278 citations · 1.2k across the 21 of their papers we have counts for
Showing 2018Show all
3 papers · 1 filter
cond-mat.supr-con2018★ 145 cited
Quantum metric and effective mass of a two-body bound state in a flat band
Paivi Torma, Long Liang, Sebastiano Peotta
We consider two-body bound states in a flat band of a multiband system. The existence of pair dispersion predicts the possibility of breaking the degeneracy of the band and creatin…
cond-mat.str-el2018★ 116 cited
Preformed pairs in flat Bloch bands
Murad Tovmasyan, Sebastiano Peotta, Long Liang +2
In a flat Bloch band the kinetic energy is quenched and single particles cannot propagate since they are localized due to destructive interference. Whether this remains true in the…
cond-mat.quant-gas2018★ 7 cited
Superfluid weight and Berezinskii-Kosterlitz-Thouless temperature of spin-imbalanced and spin-orbit-coupled Fulde-Ferrell phases in lattice systems
Aleksi Julku, Long Liang, Päivi Törmä
We study the superfluid weight and Berezinskii-Kosterlitz-Thouless (BKT) transition temperatures in case of exotic Fulde-Ferrell (FF) superfluid states in lattice s…