3 papers
cond-mat.quant-gas2020
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…
cond-mat.quant-gas2019
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…
cond-mat.str-el2018
Quantum criticality on a chiral ladder: an iDMRG study
Philipp Schmoll, Andreas Haller, Matteo Rizzi +1
In this paper we study the ground state properties of a ladder Hamiltonian with chiral -invariant spin interactions, a possible first step towards the construction of truly…