Active bound states arising from transiently nonreciprocal pair interactions
Static nonreciprocal forces between particles generically drive persistent motion reminiscent of self-propulsion. Here, we demonstrate that reciprocity-breaking fluctuations about a reciprocal mean coupling strength are sufficient to generate this behavior in a minimal two-particle model, with the v...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-10-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.043032 |
| _version_ | 1797210399042437120 |
|---|---|
| author | Luca Cocconi Henry Alston Thibault Bertrand |
| author_facet | Luca Cocconi Henry Alston Thibault Bertrand |
| author_sort | Luca Cocconi |
| collection | DOAJ |
| description | Static nonreciprocal forces between particles generically drive persistent motion reminiscent of self-propulsion. Here, we demonstrate that reciprocity-breaking fluctuations about a reciprocal mean coupling strength are sufficient to generate this behavior in a minimal two-particle model, with the velocity of the ensuing active bound state being modulated in time according to the nature of these fluctuations. To characterize the ensuing nonequilibrium dynamics, we derive exact results for the time-dependent center of mass mean-square displacement and average rate of entropy production for two simple examples of discrete- and continuous-state fluctuations in one dimension. We find that the resulting dimer can exhibit unbiased persistent motion akin to that of an active particle, leading to a significantly enhanced effective diffusivity. |
| first_indexed | 2024-04-24T10:09:58Z |
| format | Article |
| id | doaj.art-bf826fbbe1f84765b2b8eb1bb81eaf3a |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:09:58Z |
| publishDate | 2023-10-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-bf826fbbe1f84765b2b8eb1bb81eaf3a2024-04-12T17:34:55ZengAmerican Physical SocietyPhysical Review Research2643-15642023-10-015404303210.1103/PhysRevResearch.5.043032Active bound states arising from transiently nonreciprocal pair interactionsLuca CocconiHenry AlstonThibault BertrandStatic nonreciprocal forces between particles generically drive persistent motion reminiscent of self-propulsion. Here, we demonstrate that reciprocity-breaking fluctuations about a reciprocal mean coupling strength are sufficient to generate this behavior in a minimal two-particle model, with the velocity of the ensuing active bound state being modulated in time according to the nature of these fluctuations. To characterize the ensuing nonequilibrium dynamics, we derive exact results for the time-dependent center of mass mean-square displacement and average rate of entropy production for two simple examples of discrete- and continuous-state fluctuations in one dimension. We find that the resulting dimer can exhibit unbiased persistent motion akin to that of an active particle, leading to a significantly enhanced effective diffusivity.http://doi.org/10.1103/PhysRevResearch.5.043032 |
| spellingShingle | Luca Cocconi Henry Alston Thibault Bertrand Active bound states arising from transiently nonreciprocal pair interactions Physical Review Research |
| title | Active bound states arising from transiently nonreciprocal pair interactions |
| title_full | Active bound states arising from transiently nonreciprocal pair interactions |
| title_fullStr | Active bound states arising from transiently nonreciprocal pair interactions |
| title_full_unstemmed | Active bound states arising from transiently nonreciprocal pair interactions |
| title_short | Active bound states arising from transiently nonreciprocal pair interactions |
| title_sort | active bound states arising from transiently nonreciprocal pair interactions |
| url | http://doi.org/10.1103/PhysRevResearch.5.043032 |
| work_keys_str_mv | AT lucacocconi activeboundstatesarisingfromtransientlynonreciprocalpairinteractions AT henryalston activeboundstatesarisingfromtransientlynonreciprocalpairinteractions AT thibaultbertrand activeboundstatesarisingfromtransientlynonreciprocalpairinteractions |