Flavor Degeneracy and Effects of Disorder in Ultracold Atom Systems
arXiv:cond-mat/0504113 · doi:10.1007/11423256_9
Abstract
Cold atoms in optical lattices offer an exciting new laboratory where quantum many-body phenomena can be realized in a highly controlled way. They can even serve as quantum simulators for notoriously difficult problems like high-temperature superconductivity. This review is focussed on recent developments and new results in multi-component systems. Fermionic atoms with SU(N) symmetry have exotic superfluid and flavor-ordered ground states. We discuss symmetry breaking, collective modes and detection issues. Bosonic multi-flavor ensembles allow for engineering of spin Hamiltonians which are interesting from a quantum computation point of view. Finally, we will address the competition of disorder and interaction in optical lattices. We present a complete phase diagram obtained within dynamical mean-field theory and discuss experimental observability of the Mott and Anderson phases.
arXiv comment13 pages, 9 eps figures included, Adv. Solid State Phys. (in press)
Cited by in corpus (6)
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Disordered ultracold atomic gases in optical lattices: A case study of Fermi-Bose mixtures
- SU(N) quantum spin models: A variational wavefunction study
- Universal thermodynamics of an SU() Fermi-Hubbard Model
- Ultracold atomic Bose and Fermi spinor gases in optical lattices
- Exact solution of an su(n) spin torus