31 citations · 121 across the 11 of their papers we have counts for
4 papers · 1 filter
Supersolid-Superfluid phase separation in the extended Bose-Hubbard model
Korbinian Kottmann, Andreas Haller, Antonio Acín +2
Recent studies have suggested a new phase in the extended Bose-Hubbard model in one dimension at integer filling [1,2]. In this work, we show that this new phase is phase-separated…
Exploring helical phases of matter in bosonic ladders
Andreas Haller, Apollonas S. Matsoukas-Roubeas, Yueting Pan +2
Ladder models of ultracold atoms offer a versatile platform for the experimental and theoretical study of different phenomena and phases of matter linked to the interplay between a…
Detecting topology through dynamics in interacting fermionic wires
Andreas Haller, Pietro Massignan, Matteo Rizzi
We describe a protocol to read out the topological invariant of interacting 1D chiral models, based on measuring the mean chiral displacement of time-evolving bulk excitations. We…
Drude weight increase by orbital and repulsive interactions in fermionic ladders
Andreas Haller, Matteo Rizzi, Michele Filippone
In strictly one-dimensional systems, repulsive interactions tend to reduce particle mobility on a lattice. Therefore, the Drude weight, controlling the divergence at zero-frequency…