Phase randomization of three-wave interactions in capillary waves
| Autor: | Punzmann, H., Shats, M. G., Xia, H. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Physical Review Letters, 103, 064502, 2009 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.103.064502 |
| Popis: | We present new experimental results on the transition from the coherent-phase to the random-phase three-wave interactions in capillary waves under parametric excitation. Above the excitation threshold, coherent wave harmonics spectrally broaden. An increase in the pumping amplitude increases spectral widths of wave harmonics and eventually causes a strong decrease in the degree of the three-wave phase coupling. The results point to the modulation instability of capillary waves, which leads to breaking of continuous waves into ensembles of short-lived wavelets or envelope solitons, as the reason for the phase randomization of three-wave interactions. Comment: 4 pages, 5 figures, accepted 17July09 for publication in PRL |
| Databáze: | arXiv |
| Externí odkaz: |
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