Parts | Days | Selection | Search | Updates | Downloads | Help
TT: Fachverband Tiefe Temperaturen
TT 45: Correlated Electrons: Nonequilibrium Quantum Many-Body Systems 3 (jointly with DY)
TT 45.3: Talk
Tuesday, March 17, 2015, 14:30–14:45, H 3010
Quantum Freezing Effect in 1D SU(N) Hubbard Systems — •Salvatore R. Manmana, Mariya V. Medvedyeva, and Johannes M. Oberreuter — Institut f. Theoretische Physik, Georg-August-Universität Göttingen, D-37077 Göttingen
We investigate the time evolution of SU(N) Fermi-Hubbard systems by releasing initially trapped particles onto an empty lattice. Using the time-dependent DMRG and perturbative approaches, we find that in one spatial dimension for large enough filling and values of N, repulsive interactions cause the dynamics to develop a very strong freezing effect, i.e., on the time scales accessible, particle motion is essentially suppressed. We relate this finding to the quantum distillation effect previously reported for SU(2) Fermi-Hubbard systems and discuss its relevance for ongoing experiments with alkaline earth atom experiments on optical lattices.