Workshop on Ultrafast Dynamics in Strongly Correlated Systems

Session

Mott-Hubbard systems

T6

5 Apr 2011, 10:30

ETH Zurich, Campus Science City, HIT Building

Description

Chair: H. Aoki

18. Nonequilibrium quantum dynamics of a charge carrier doped into Mott insulator

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...

46. Non-equilibrium Mott-Hubbard Systems in Strong External Laser Fields

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...

38. A DMFT investigation of relaxation phenomena in Mott-insulating states

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....