Abstract
We address (i) the onset of spatiotemporal chaos (STC) induced by the hyperbolic structure in a weakly perturbed nonlinear Schrödinger equation, and (ii) its effective stochastic dynamics (ESD). We obtain the following new results: (1) a very small number (two for our system) of linearly unstable modes is sufficient to trigger the onset of STC as characterized by an exponential decay in space of the mutual information; (2) the construction of the ESD needs only temporal chaos, in contrast to the requirement of full STC as usually believed.
| Original language | English |
|---|---|
| Pages (from-to) | 280-286 |
| Number of pages | 7 |
| Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |
| Volume | 253 |
| Issue number | 5-6 |
| DOIs | |
| State | Published - 29 Mar 1999 |
| Externally published | Yes |
Keywords
- Integrability
- Mutual information
- NLS
- Spatiotemporal chaos
- Stochastic dynamics
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