Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-12-23
Physics
Condensed Matter
Strongly Correlated Electrons
11 pages, 5 figs. New version as accepted in PRA. We have clarified the models we are discussing in various places, and expand
Scientific paper
10.1103/PhysRevA.79.033620
We study the conditions under which, using a canonical transformation, the phases sought after for the repulsive Hubbard model, namely a Mott insulator in the paramagnetic and anti-ferromagnetic phases, and a putative d-wave superfluid can be deduced from observations in an optical lattice loaded with a spin-imbalanced ultra-cold Fermi gas with attractive interactions, thus realizing the attractive Hubbard model. We show that the Mott insulator and antiferromagnetic phase of the repulsive Hubbard model are in fact more easy to observe as a paired, and superfluid phase respectively, in the attractive Hubbard model. The putative d-wave superfluid phase of the repulsive Hubbard model doped away from half-filling is related to a d-wave antiferromagnetic phase for the attractive Hubbard model. We discuss the advantages of this approach to 'quantum simulate' the Hubbard model in an optical lattice over the approach that attempts to directly simulate the doped Hubbard model in the repulsive regime. We also point out a number of technical difficulties of the proposed approach and, in some cases, suggest possible solutions.
Cazalilla Miguel A.
Giamarchi Thierry
Ho Andrew F.
No associations
LandOfFree
Quantum Simulation of the Hubbard Model: The Attractive Route does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quantum Simulation of the Hubbard Model: The Attractive Route, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Simulation of the Hubbard Model: The Attractive Route will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-606249