Effective attraction by repulsion
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866914526282121216 |
|---|---|
| author | Garcia-Millan, Rosalba Cocconi, Luca Zhang, Ziluo Bothe, Marius Chen, Letian Zhen, Zigan Pruessner, Gunnar |
| author_facet | Garcia-Millan, Rosalba Cocconi, Luca Zhang, Ziluo Bothe, Marius Chen, Letian Zhen, Zigan Pruessner, Gunnar |
| contents | Repulsive self-propelled particles tend to cluster, leading to Motility-Induced Phase Separation (MIPS). By analogy with equilibrium phase separation, the onset of MIPS has been associated with a transition to effective attraction between particles. Using an exact microscopic theory, we quantify the emergence of effective attraction in a minimal model: two soft run-and-tumble particles in a periodic domain. We show that, as repulsion increases, the leading-order behaviour is that of effective repulsion, while effective attraction emerges as a higher-order contribution to the renormalisation of the pair potential. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_01421 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Effective attraction by repulsion Garcia-Millan, Rosalba Cocconi, Luca Zhang, Ziluo Bothe, Marius Chen, Letian Zhen, Zigan Pruessner, Gunnar Statistical Mechanics Soft Condensed Matter Repulsive self-propelled particles tend to cluster, leading to Motility-Induced Phase Separation (MIPS). By analogy with equilibrium phase separation, the onset of MIPS has been associated with a transition to effective attraction between particles. Using an exact microscopic theory, we quantify the emergence of effective attraction in a minimal model: two soft run-and-tumble particles in a periodic domain. We show that, as repulsion increases, the leading-order behaviour is that of effective repulsion, while effective attraction emerges as a higher-order contribution to the renormalisation of the pair potential. |
| title | Effective attraction by repulsion |
| topic | Statistical Mechanics Soft Condensed Matter |
| url | https://arxiv.org/abs/2605.01421 |