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Dresden 2020 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 19: Nonequilibrium Quantum Many-Body Systems 1 (joint session TT/DY)

DY 19.10: Vortrag

Dienstag, 17. März 2020, 12:00–12:15, HSZ 204

Effect of dimensionality on the dynamics of optically excited Mott-Hubbard clusters — •Junichi Okamoto — Institute of Physics, University of Freiburg, Freiburg, Germany

Development of intense light sources and of various time-resolved spectroscopies has opened up a new avenue in condensed matter physics. In particular, optically excited nonequilibrium states of strongly correlated systems show nontrivial and intriguing phenomena such as light- induced superconductivity or ultrafast structural switching. An important step to understand these phenomena is to investigate the excitation spectrum of a system. To this end, we use an exact diagonalization method to study the effect of dimensionality on the dynamics of optically excited states in Mott-Hubbard clusters. We compare the excitation spectrum in one and two dimensions, and demonstrate the different transient dynamics induced by short optical pulses.

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