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Small traveling clusters in attractive and repulsive Hamiltonian mean-field models.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Barré, Julien |
| Copyright Year | 2009 |
| Abstract | Long-lasting small traveling clusters are studied in the Hamiltonian mean-field model by comparing between attractive and repulsive interactions. Nonlinear Landau damping theory predicts that a Gaussian momentum distribution on a spatially homogeneous background permits the existence of traveling clusters in the repulsive case, as in plasma systems, but not in the attractive case. Nevertheless, extending the analysis to a two-parameter family of momentum distributions of Fermi-Dirac type, we theoretically predict the existence of traveling clusters in the attractive case; these findings are confirmed by direct N -body numerical simulations. The parameter region with the traveling clusters is much reduced in the attractive case with respect to the repulsive case. |
| Starting Page | 036208 |
| Ending Page | 036208 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://repository.kulib.kyoto-u.ac.jp/dspace/bitstream/2433/202513/1/PhysRevE.79.036208.pdf |
| PubMed reference number | 19392036v1 |
| Volume Number | 79 |
| Issue Number | 3 |
| Part | 2 |
| Journal | Physical review. E, Statistical, nonlinear, and soft matter physics |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
