74 citations · 110 across the 3 of their papers we have counts for
3 papers
cond-mat.quant-gas2016★ 15 cited
Twisted superfluid phase in the extended one-dimensional Bose-Hubbard model
Dirk-Sören Lühmann
In one-dimensional systems a twisted superfluid phase is found which is induced by a spontaneous breaking of the time-reversal symmetry. Using the density-matrix renormalization gr…
cond-mat.quant-gas2013★ 74 cited
Cluster Gutzwiller method for bosonic lattice systems
Dirk-Sören Lühmann
A versatile and numerically inexpensive method is presented allowing the accurate calculation of phase diagrams for bosonic lattice models. By treating clusters within the Gutzwill…
cond-mat.other2007★ 21 cited
Localization and delocalization of ultracold bosonic atoms in finite optical lattices
Dirk-Sören Lühmann, Kai Bongs, Klaus Sengstock +1
We study bosonic atoms in small optical lattices by exact diagonalization and observe a striking similarity to the superfluid to Mott insulator transition in macroscopic systems. T…