Abstract
We study photoinduced dynamical properties of the one-dimensional two-orbital degenerate Hubbard model. By using the Lanczos diagonalization method, we calculate optical conductivity spectra of the lowest photoexcited state. The optical conductivity has the Drude-like low-energy component caused by photogenerated carriers, a holon and a triplet doublon. We have also found an additional low-energy component in the spectra, which demonstrates a transition from the triplet doublon to singlet doublons.
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