  The solvated electron represents an elementary quantum system in a liquid
environment. Electrons solvated in water have raised strong interest because of
their prototypical properties, their role in radiation chemistry, and their
relevance for charge separation and transport. Nonequilibrium dynamics of
photogenerated electrons in water occur on ultrafast time scales and include
charge transfer, localization, and energy dissipation processes. We present new
insight in the role of fluctuating electric fields of the liquid for generating
electrons in presence of an external terahertz field and address polaronic
many-body properties of solvated electrons. The article combines a review of
recent results from experiment and theory with a discussion of basic electric
interactions of electrons in water.
