Phase separation kinetics of 2-TIPS at low density: Cluster growth by ballistic agglomeration
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866914213031575552 |
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| author | Venkatareddy, Nayana Mondal, Partha Sarathi Mishra, Shradha Maiti, Prabal K. |
| author_facet | Venkatareddy, Nayana Mondal, Partha Sarathi Mishra, Shradha Maiti, Prabal K. |
| contents | We study the kinetics of two-temperature induced phase separation (2-TIPS) in dilute binary mixtures of active ("hot") and passive ("cold") particles using molecular dynamics simulations and a coarse-grained hydrodynamic model. Following a temperature quench, cold particles nucleate into mobile clusters that move ballistically and merge through successive coalescence events. The resulting domain growth exhibits dynamic scaling with a growth exponent of approximately 0.7, markedly faster than diffusive coarsening. We identify this regime as ballistic agglomeration of cold clusters, demonstrating a distinct nonequilibrium growth mechanism in low-density scalar active systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_18615 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Phase separation kinetics of 2-TIPS at low density: Cluster growth by ballistic agglomeration Venkatareddy, Nayana Mondal, Partha Sarathi Mishra, Shradha Maiti, Prabal K. Soft Condensed Matter We study the kinetics of two-temperature induced phase separation (2-TIPS) in dilute binary mixtures of active ("hot") and passive ("cold") particles using molecular dynamics simulations and a coarse-grained hydrodynamic model. Following a temperature quench, cold particles nucleate into mobile clusters that move ballistically and merge through successive coalescence events. The resulting domain growth exhibits dynamic scaling with a growth exponent of approximately 0.7, markedly faster than diffusive coarsening. We identify this regime as ballistic agglomeration of cold clusters, demonstrating a distinct nonequilibrium growth mechanism in low-density scalar active systems. |
| title | Phase separation kinetics of 2-TIPS at low density: Cluster growth by ballistic agglomeration |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2512.18615 |