 |
| Titel |
Kolmogorov entropy in the percolation regime: the saturation of chaos |
| VerfasserIn |
R. Bitane, G. Zimbardo, A. V. Milovanov, P. Pommois |
| Konferenz |
EGU General Assembly 2009
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250019771
|
|
|
|
|
|
| Zusammenfassung |
| We report the first numerical computation of Kolmogorov entropy h of magnetic field lines
extending from the quasilinear up to the percolation regime, using a numerical code where
one can change both the turbulence level δB∕B0 and the turbulence anisotropy
l||∕l⊥. We find that the proposed percolation scaling of h is not reproduced, but
rather a saturation of h is obtained. Also, we find that the Kolmogorov entropy
depends solely on the Kubo number R = (δB∕B0)(l||∕l⊥), and not separately
on δB∕B0 and l||∕l⊥. We apply the results to electron transport in solar coronal
loops, which involves the use of the Rechester and Rosenbluth diffusion coefficient,
and show that the study of transport in the percolation regime is required. A new
theoretical interpretation for the saturation of the Kolmogov entropy is also proposed. |
|
|
|
|
|
|