Publications (17)
Two-body problem in periodic potentials
M. Wouters, G. Orso
We investigate the problem of two atoms interacting via a short range s-wave potential in the presence of a deep optical lattice of arbitrary dimension . Using a tight binding a…
Quantum Monte Carlo simulations of two-dimensional repulsive Fermi gases with population imbalance
S. Pilati, G. Orso, G. Bertaina
The ground-state properties of two-component repulsive Fermi gases in two dimensions are investigated by means of fixed-node diffusion Monte Carlo simulations. The energy per parti…
Sound propagation and oscillations of a superfluid Fermi gas in the presence of a 1D optical lattice
L. P. Pitaevskii, S. Stringari, G. Orso
We develop the hydrodynamic theory of Fermi superfluids in the presence of a periodic potential. The relevant parameters governing the propagation of sound (compressibility and eff…
Long-time behavior of the momentum distribution during the sudden expansion of a spin-imbalanced Fermi gas in one dimension
C. J. Bolech, F. Heidrich-Meisner, S. Langer +3
We study the sudden expansion of spin-imbalanced ultracold lattice fermions with attractive interactions in one dimension after turning off the longitudinal confining potential. We…
Formation of molecules near a Feshbach resonance in a 1D optical lattice
G. Orso, L. P. Pitaevskii, S. Stringari +1
We calculate the binding energy of two atoms interacting near a Feshbach resonance in the presence of a 1D periodic potential. The critical value of the scattering length needed to…
In-Plane Conductivity Anisotropy in Underdoped Cuprates in the Spin-Charge Gauge Approach
P. A. Marchetti, G. Orso, Z. B. Su +1
Applying the recently developed spin-charge gauge theory for the pseudogap phase in cuprates, we propose a self-consistent explanation of several peculiar features of the far-infra…