Fast fluctuating fields as the source of low-frequency conductance   fluctuations in many-electron systems and failure of quantum kinetics
  It is shown that in many-electron systems quantum transfer amplitudes and thus transfer probabilities may be strongly influenced by fast fluctuating fields, in particular, caused by simultaneous electron transfers. Corresponding mutual interplay of many electron jumps, arising at the fundamental level of quantum phases, results in long-correlated (1/f type) conductance fluctuations. However, thats could not be theoretically catched if neglect the real discreteness of quantum energy spectra and use the continuous spectrum approximation when building kinetic theory. Basing on first principles, the estimates of low-frequency fluctuations of tunneling conductance are presented. 
Yu.E.Kuzovlev