147 citations · 590 across the 18 of their papers we have counts for
18 papers
Phase transitions in the and U(1) clock models
G. Sun, T. Vekua, E. Cobanera +1
Quantum phase transitions are studied in the non-chiral -clock chain, and a new explicitly U(1)-symmetric clock model, by monitoring the ground-state fidelity susceptibility. Fo…
Vortex-hole duality: a unified picture of weak and strong-coupling regimes of bosonic ladders with flux
S. Greschner, T. Vekua
Two-leg bosonic ladders with flux harbor a remarkable vortex-hole duality between the weak-coupling vortex lattice superfluids and strong-coupling charge-density-wave crystals. The…
Symmetry-broken states in a system of interacting bosons on a two-leg ladder with a uniform Abelian gauge field
S. Greschner, M. Piraud, F. Heidrich-Meisner +3
We study the quantum phases of bosons with repulsive contact interactions on a two-leg ladder in the presence of a uniform Abelian gauge field. The model realizes many interesting…
Topological quasi-one-dimensional state of interacting spinless electrons
G. Sun, T. Vekua
By decreasing the transversal confinement potential in interacting one-dimensional spinless electrons and populating the second energetically lowest sub-band, for not too strong in…
Ground-state phases of rung-alternated spin-1/2 Heisenberg ladder
F. Amiri, G. Sun, H. -J. Mikeska +1
The ground-state phase diagram of Heisenberg spin-1/2 system on a two-leg ladder with rung alternation is studied by combining analytical approaches with numerical simulations. For…
Vortex and Meissner phases of strongly-interacting bosons on a two-leg ladder
M. Piraud, F. Heidrich-Meisner, I. P. McCulloch +3
We establish the phase diagram of the strongly-interacting Bose-Hubbard model defined on a two-leg ladder geometry in the presence of a homogeneous flux. Our work is motivated by a…