On low-temperature dephasing by electron-electron interaction

摘要: The quantum coherence of electrons can be probed by studying weak localizationcorrections to the conductivity. Interaction effects lead dephasing, with electron-electron interactions being important intrinsic mechanism. A controversy exists whether or not dephasing rate, as measured in a localization experiment, vanishes at low temperatures. We review non-perturbative analysis this question and some arguments whichhave been raised against it. compact form presentation shouldmake derivation more transparent accessible for discussions. Wealso compare recent experiments.