We present a theory of full counting statistics for electron transport
through interacting electron systems with non-Markovian dynamics. We illustrate
our approach for transport through a single-level quantum dot and a metallic
single-electron transistor to second order in the tunnel-coupling strength, and
discuss under which circumstances non-Markovian effects appear in the transport
properties.Comment: 4 pages, 2 figures, LaTeX; typos added, references adde