Energy cascades and condensation via coherent dynamics in Hamiltonian systems
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866915531372625920 |
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| author | Biasi, Anxo Gérard, Patrick |
| author_facet | Biasi, Anxo Gérard, Patrick |
| contents | This work makes analytic progress in the deterministic study of turbulence in Hamiltonian systems by identifying two types of energy cascade solutions and the corresponding large- and small-scale structures they generate. The first cascade represents condensate formation via a highly coherent process recently uncovered, while the second cascade, which has not been previously observed, leads to the formation of other large-scale structures. The concentration of energy at small scales is characterized in both cases by the development of a power-law spectrum in finite time, causing the blow-up of Sobolev norms and the formation of coherent structures at small scales. These structures approach two different types of singularities: a point discontinuity in one case and a cusp in the other. The results are fully analytic and explicit, based on two solvable families of Hamiltonian systems identified in this study. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_03663 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Energy cascades and condensation via coherent dynamics in Hamiltonian systems Biasi, Anxo Gérard, Patrick Mathematical Physics Analysis of PDEs Exactly Solvable and Integrable Systems This work makes analytic progress in the deterministic study of turbulence in Hamiltonian systems by identifying two types of energy cascade solutions and the corresponding large- and small-scale structures they generate. The first cascade represents condensate formation via a highly coherent process recently uncovered, while the second cascade, which has not been previously observed, leads to the formation of other large-scale structures. The concentration of energy at small scales is characterized in both cases by the development of a power-law spectrum in finite time, causing the blow-up of Sobolev norms and the formation of coherent structures at small scales. These structures approach two different types of singularities: a point discontinuity in one case and a cusp in the other. The results are fully analytic and explicit, based on two solvable families of Hamiltonian systems identified in this study. |
| title | Energy cascades and condensation via coherent dynamics in Hamiltonian systems |
| topic | Mathematical Physics Analysis of PDEs Exactly Solvable and Integrable Systems |
| url | https://arxiv.org/abs/2412.03663 |