580 citations
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12 papers · 1 filter
Collective excitations in one-dimensional ultracold Fermi gases: a comparative study
Wei Li, Gao Xianlong, Corinna Kollath +1
Time-dependent density-functional theory (TDDFT) is a powerful tool to study the non-equilibrium dynamics of inhomogeneous interacting many-body systems. Here we show that the simp…
Sum-rules for Raman scattering off strongly correlated electron systems
L. de' Medici, A. Georges, G. Kotliar
We investigate sum-rules applying to the Raman intensity in a strongly correlated system close to the Mott transition. Quite generally, it can be shown that, provided the frequency…
The quasi-periodic Bose-Hubbard model and localization in one-dimensional cold atomic gases
G. Roux, T. Barthel, I. P. McCulloch +3
We compute the phase diagram of the one-dimensional Bose-Hubbard model with a quasi-periodic potential by means of the density-matrix renormalization group technique. This model de…
Effect of Crystal-Field Splitting and Inter-Band Hybridization on the Metal-Insulator Transitions of Strongly Correlated Systems
Alexander I. Poteryaev, Michel Ferrero, Antoine Georges +1
We investigate a quarter-filled two-band Hubbard model involving a crystal-field splitting, which lifts the orbital degeneracy as well as an inter-orbital hopping (inter-band hybri…
Electronic Transport through Magnetic Molecules with Soft Vibrating Modes
P. S. Cornaglia, Gonzalo Usaj, C. A. Balseiro
The low-temperature transport properties of a molecule are studied in the field-effect transitor geometry. The molecule has an internal mechanical mode that modulates its electroni…
Crystallization of the resonating valence bond liquid as vortex condensation
Arnaud Ralko, Michel Ferrero, Federico Becca +2
We show that the liquid-to-crystal quantum phase transition in the Rokhsar--Kivelson dimer model on the two-dimensional triangular lattice occurs as a condensation of vortex-like e…