Ultracold fermions and the SU(N) Hubbard model
| dc.creator | Honerkamp, Carsten | |
| dc.creator | Hofstetter, Walter | |
| dc.date | 2003-09-16 | |
| dc.date.accessioned | 2026-07-07T02:53:28Z | |
| dc.date.available | 2026-07-07T02:53:28Z | |
| dc.description | We investigate the fermionic SU(N) Hubbard model on the two-dimensional square lattice for weak to moderate interaction strengths using one-loop renormalization group and mean-field methods. For the repulsive case U>0 at half filling and small N the dominant tendency is towards breaking of the SU(N) symmetry. For N>6 staggered flux order takes over as the dominant instability, in agreement with the large-N limit. Away from half filling for N=3 the system rearranges the particle densities such that two flavors remain half filled by cannibalizing the third flavor. In the attractive case and odd N a full Fermi surface coexists with a superconductor in the ground state. These results may be relevant to future experiments with cold fermionic atoms in optical lattices. | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0309374 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0309374 | |
| dc.identifier | Phys. Rev. Lett. 92, 170403 (2004) | |
| dc.identifier | doi:10.1103/PhysRevLett.92.170403 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22227 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Superconductivity | |
| dc.title | Ultracold fermions and the SU(N) Hubbard model | |
| dc.type | text |