| Autor: |
Maia RN; Centro Brasileiro de Pesquisas Físicas (CBPF), Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro, Brazil., Nicacio F, Vallejos RO, Toscano F |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2008 May 09; Vol. 100 (18), pp. 184102. Date of Electronic Publication: 2008 May 06. |
| DOI: |
10.1103/PhysRevLett.100.184102 |
| Abstrakt: |
We analyze the semiclassical evolution of Gaussian wave packets in chaotic systems. We show that after some short time a Gaussian wave packet becomes a primitive WKB state. From then on, the state can be propagated using the standard time-dependent WKB scheme. Complex trajectories are not necessary to account for the long-time propagation. The Wigner function of the evolving state develops the structure of a classical filament plus quantum oscillations, with phase and amplitude being determined by geometric properties of a classical manifold. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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