Theory of time-resolved optical spectroscopy on correlated electron systems

Details Theory of time-resolved optical spectroscopy on correlated electron systems Theory of time-resolved optical spectroscopy on correlated electron systems

2008-08-07

arxiv.org/abs/0808.1005v1

Phys. Rev. B 78, 205119 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 3 figures

Scientific paper

10.1103/PhysRevB.78.205119

The real-time dynamics of interacting electrons out of equilibrium contains detailed microscopic information about electronically correlated materials, which can be read out with time-resolved optical spectroscopy. The reflectivity that is typically measured in pump-probe experiments is related to the nonequilibrium optical conductivity. We show how to express this quantity in terms of real-time Green functions using dynamical mean-field theory. As an application we study the electrical response of the Falicov-Kimball model during the ultrafast buildup of the gapped phase at large interaction.

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