175 citations · 643 across the 14 of their papers we have counts for
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cond-mat.other2009★ 43 cited
Unified picture of superfluidity: From Bogoliubov's approximation to Popov's hydrodynamic theory
N. Dupuis
Using a non-perturbative renormalization-group technique, we compute the momentum and frequency dependence of the anomalous self-energy and the one-particle spectral function of tw…
cond-mat.other2008★ 10 cited
Superfluid to Mott-insulator transition of cold atoms in optical lattices
N. Dupuis, K. Sengupta
We review the superfluid to Mott-insulator transition of cold atoms in optical lattices. The experimental signatures of the transition are discussed and the RPA theory of the Bose-…
cond-mat.other2005
Variational Cluster Perturbation Theory for Bose-Hubbard models
W. Koller, N. Dupuis
We discuss the application of the variational cluster perturbation theory (VCPT) to the Mott-insulator--to--superfluid transition in the Bose-Hubbard model. We show how the VCPT ca…