Konwersatorium im. Leopolda Infelda
Nowa Auli (425), ul. Hoża 69
2011-01-20 (15:30) 
Prof. Dr. W. Hofstetter (Goethe-Universität Frankfurt)
Magnetic and color superfluid order in multiflavor Fermi gases
Cold atoms in optical lattices offer a new laboratory for quantum many-body phenomena. One of their main advantages is the high tunabilityof interactions and quantum statistics. In this colloquium I will focus on current developments in multiflavor Fermi gases:
i) We investigate antiferromagnetic ordering of trapped spin-1/2 fermions using large-scale dynamical mean-field theory simulations. We find a clear experimental signature - enhanced double occupancy - for the onset of magnetic order at low temperatures in current experiments.
ii) We study the properties of three-flavor fermions in an optical lattice, where new exotic quantum states such as color superfluids arise in partial analogy to Quantum Chromodynamics. Low-temperature properties of this system are addressed using DMRG and dynamical mean-field theory. Wefind a strong interplay between magnetization and color superfluidity.
i) We investigate antiferromagnetic ordering of trapped spin-1/2 fermions using large-scale dynamical mean-field theory simulations. We find a clear experimental signature - enhanced double occupancy - for the onset of magnetic order at low temperatures in current experiments.
ii) We study the properties of three-flavor fermions in an optical lattice, where new exotic quantum states such as color superfluids arise in partial analogy to Quantum Chromodynamics. Low-temperature properties of this system are addressed using DMRG and dynamical mean-field theory. Wefind a strong interplay between magnetization and color superfluidity.