Description
Chair: H. Aoki
Lev Vidmar
(Jozef Stefan Institute)
05/04/2011, 10:30
Talk
We study real-time dynamics of a single carrier moving in a strongly-correlated medium under a constant electric field described by a two-dimensional t-J system, i.e., a ladder and 2D square lattice. The understanding of this subject does not only provide an extension of equilibrium studies of a charge carrier doped into the antiferromagnetic (AFM) background, but it primarily represents a...
Johann Kroha
(Universität Bonn)
05/04/2011, 10:50
Invited talk
We consider the Hubbard model at half filling, driven out of equilibrium by a strong external laser field, represented by a a classical single-mode, time-periodic electromagnetic field. We show that in an appropriate U(1) gauge the low-frequency, long-wavelength limit may be taken in a controlled way, such that no spurious infared singularities (orthogonality catastrophe) occur, in contrast to...
Martin Eckstein
(ETH Zurich)
05/04/2011, 11:30
Invited talk
Nonequilibrium dynamical mean-field theory (DMFT) provides a
nonperturbative way to compute the time evolution of correlated
electrons on a lattice, by mapping the lattice model to an impurity model. Recently, we have implemented an impurity solver based on the non-crossing approximation and its extensions, which allows us to address the regime of strong interaction in Hubbard-like models....
