Pg. Silvestrov et Y. Imry, Towards an explanation of the mesoscopic double-slit experiment: A new model for charging of a quantum dot, PHYS REV L, 85(12), 2000, pp. 2565-2568
For a quantum dot (QD) in thr intermediate regime between integrable and fu
lly chaotic, the widths of single-particle levels naturally differ by order
s of magnitude. In particular, the width of one strongly coupled level may
be larger than the spacing between other, very narrow, levels. In this case
many consecutive Coulomb blockade peaks are due to occupation of the same
broad level. Between the peaks the electron jumps from this level to one of
the narrow levels, and the transmission through the dot at the next resona
nce essentially repeats that at the previous one. This offers a natural exp
lanation to the recently observed behavior of the transmission phase in an
interferometer with a QD.