Coexistence of excited polarons and metastable delocalized states in photoinduced metals

  title={Coexistence of excited polarons and metastable delocalized states in photoinduced metals},
  author={Sharareh Sayyad and Martin Eckstein},
  journal={Physical Review B},
We study how polaronic states form as a function of time due to strong electron-phonon coupling, starting from a hot electron distribution which is representative of a photoinduced metallic state immediately after laser excitation. For this purpose we provide the exact solution of the single-electron Holstein model within nonequilibrium dynamical mean-field theory. In particular, this allows us to reveal key features of the transient metallic state in the numerically most challenging regime… 

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