Structural dynamics and optimal transport of an active polymer
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912018438553600 |
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| author | Khalilian, Hamidreza Peruani, Fernando Sarabadani, Jalal |
| author_facet | Khalilian, Hamidreza Peruani, Fernando Sarabadani, Jalal |
| contents | We study the spontaneous configuration transitions of an active semi-flexible polymer between {\it spiral} and {\it non-spiral} states, and show that the configuration dynamics is fully described by a {\it subcritical pitchfork} bifurcation. Exploiting the fact that active polymer barely moves in {\it spiral} states and exhibits net displacements in {\it non-spiral} states, we theoretically prove that the motion of the active polymer is consistent with a {\it run-and-tumble}-like dynamics. Moreover, we find that there exists an {\it optimal} self-propelling {\it force}, at which the probabilities of finding the polymer in the {\it spiral} and {\it non-spiral} state become equal, that maximizes the diffusion coefficient. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_01719 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Structural dynamics and optimal transport of an active polymer Khalilian, Hamidreza Peruani, Fernando Sarabadani, Jalal Soft Condensed Matter We study the spontaneous configuration transitions of an active semi-flexible polymer between {\it spiral} and {\it non-spiral} states, and show that the configuration dynamics is fully described by a {\it subcritical pitchfork} bifurcation. Exploiting the fact that active polymer barely moves in {\it spiral} states and exhibits net displacements in {\it non-spiral} states, we theoretically prove that the motion of the active polymer is consistent with a {\it run-and-tumble}-like dynamics. Moreover, we find that there exists an {\it optimal} self-propelling {\it force}, at which the probabilities of finding the polymer in the {\it spiral} and {\it non-spiral} state become equal, that maximizes the diffusion coefficient. |
| title | Structural dynamics and optimal transport of an active polymer |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2401.01719 |