Hamburg 2001 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 46: Poster
DY 46.17: Poster
Donnerstag, 29. März 2001, 15:45–18:15, Foyer S\ 3
Deviations from universality in spectral statistics of the Anderson model — •V. Uski1, B. Mehlig2, and M. Schreiber1 — 1Institut für Physik, Technische Universität, D-09107 Chemnitz — 2Universität Freiburg, Fakultät für Physik, D-79104 Freiburg
We present numerical results for the spectral formfactor obtained by exact diagonalization of an Anderson tight-binding model. The results show the Altshuler-Shklovskii behaviour at small times [1] as well as the predicted nonuniversal behaviour around the Heisenberg time [2,3].
[1] B. L. Altshuler and B. I. Shklovskii, Sov. Phys. JETP 64, 1 (1986).
[2] A. V. Andreev and B. L. Altshuler, Phys. Rev. Lett. 75, 4389 (1995).
[3] B. Mehlig and M. Wilkinson, Phys. Rev. E, in press (2000).