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Showing 2010 · cond-mat.quant-gasShow all
2 papers · 2 filters
cond-mat.quant-gas2010★ 29 cited
Variational cluster approach for strongly correlated lattice bosons in the superfluid phase
Michael Knap, Enrico Arrigoni, Wolfgang von der Linden
We extend the variational cluster approach to deal with strongly correlated lattice bosons in the superfluid phase. To this end, we reformulate the approach within a pseudoparticle…
cond-mat.quant-gas2010★ 11 cited
Excitations in disordered bosonic optical lattices
Michael Knap, Enrico Arrigoni, Wolfgang von der Linden
Spectral excitations of ultracold gases of bosonic atoms trapped in one dimensional optical lattices with disorder are investigated by means of the variational cluster approach app…