The natural time scale for the electronic interactions in matter is of the
order of hundreds of attoseconds or less. In this talk, we show a few
examples where the dynamics between two electrons can be probed with
attosecond pulses, illustrating the temporal response of one electron to
the other, in the time domain. The examples include the joint rotational
and vibrational motions between two excited electrons, the response of one
electron with the sudden removal of another electron, and the discrete
nature of autoionization of a two-electron wave packet.
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