Suppression of hyperuniformity in hydrodynamic scalar active field theories
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912133947588608 |
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| author | Padhan, Nadia Bihari Voigt, Axel |
| author_facet | Padhan, Nadia Bihari Voigt, Axel |
| contents | The coarsening dynamics at late times in phase-separating systems lead to universally hyperuniform patterns. This is well known for scalar field theories, such as the Cahn-Hilliard equation, but has also been shown for dry scalar active field theories. We demonstrate the role of hydrodynamic interactions in influencing hyperuniformity in a wet active system described by active model H. Our direct numerical simulations reveal that, while (passive) model H shows hyperuniformity in the coarsening regime, the interplay of activity and hydrodynamic interactions suppresses hyperuniformity in active model H, especially when the activity generates contractile stress in the fluid. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_17409 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Suppression of hyperuniformity in hydrodynamic scalar active field theories Padhan, Nadia Bihari Voigt, Axel Soft Condensed Matter Fluid Dynamics The coarsening dynamics at late times in phase-separating systems lead to universally hyperuniform patterns. This is well known for scalar field theories, such as the Cahn-Hilliard equation, but has also been shown for dry scalar active field theories. We demonstrate the role of hydrodynamic interactions in influencing hyperuniformity in a wet active system described by active model H. Our direct numerical simulations reveal that, while (passive) model H shows hyperuniformity in the coarsening regime, the interplay of activity and hydrodynamic interactions suppresses hyperuniformity in active model H, especially when the activity generates contractile stress in the fluid. |
| title | Suppression of hyperuniformity in hydrodynamic scalar active field theories |
| topic | Soft Condensed Matter Fluid Dynamics |
| url | https://arxiv.org/abs/2411.17409 |