Coherent states quantum 1/f noise and the quantum 1/f effect

An electrically charged particle includes the bare particle and its field. The field has been shown in the last two decades to be in a coherent state, which is not an eigenstate of the Hamiltonian. Consequently, the physical particle is not described by an energy eigenstate, and is therefore not in a stationary state. The author shows that the fluctuations arising from this non-stationarity have a 1/f spectral density and affect the ordered, collective, or translational motion of the current carriers. This 'coherent' quantum 1/f noise should be present along with the familiar quantum 1/f effect of elementary cross sections and process rates introduced ten years ago, just as the magnetic energy of a biased semiconductor sample coexists with the kinetic energy of the individual, randomly moving, current carriers. The amplitude of the quantum 1/f effect is always the difference of the coherent quantum 1/f noise amplitudes in the 'out' and 'in' states of the process under consideration and dominates in small samples, while large samples should exhibit the larger coherent quantum 1/f noise. (Auth.)