Conductance fluctuations of generic billiards: Fractal or isolated?

Citation
L. Hufnagel et al., Conductance fluctuations of generic billiards: Fractal or isolated?, EUROPH LETT, 54(6), 2001, pp. 703-708
Citations number
29
Categorie Soggetti
Physics
Journal title
EUROPHYSICS LETTERS
ISSN journal
02955075 → ACNP
Volume
54
Issue
6
Year of publication
2001
Pages
703 - 708
Database
ISI
SICI code
0295-5075(200106)54:6<703:CFOGBF>2.0.ZU;2-A
Abstract
We study the signatures of a classical mixed phase space for open quantum s ystems. We find the scaling of the break time up to which quantum mechanics mimics the classical staying probability and derive the distribution of re sonance widths. Based on these results we explain why for mixed systems two type of conductance fluctuations were found: quantum mechanics divides the hierarchically structured chaotic component of phase space into two parts -one yields fractal conductance fluctuations while the other causes isolate d resonances. In general, both type appear together, but on different energ y scales.