Abstract
Charge and current fluctuations contain a more complete information about the system transport properties than the single particle observables themselves. In this section we use a full counting statistics (FCS) analysis to investigate the time evolution of a superconducting nanojunction. We show that the subgap states (ABSs) are formed at short times after \(\sim 3\) Andreev reflections. In addition, we demonstrate the existence of an analogy between the FCS and the phase transition theory in equilibrium mechanics. Finally, the problem of a junction coupled to a phonon mode is briefly discussed, showing that it can lead to excited quasiparticles in the ABSs.
Published Version
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