2024
1.
Andriy Goychuk; Deepti Kannan; Mehran Kardar
Delayed Excitations Induce Polymer Looping and Coherent Motion Journal Article
In: Physical Review Letters, vol. 133, no. 7, pp. 078101, 2024, ISSN: 0031-9007, 1079-7114.
Abstract | Links | BibTeX | Tags: Chromatin, Langevin Equation, Living Matter & Active Matter, Polymer Behavior, Polymers, Wormlike Chain Model
@article{goychuk_delayed_2024,
title = {Delayed Excitations Induce Polymer Looping and Coherent Motion},
author = {Andriy Goychuk and Deepti Kannan and Mehran Kardar},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.133.078101},
doi = {10.1103/PhysRevLett.133.078101},
issn = {0031-9007, 1079-7114},
year = {2024},
date = {2024-08-01},
urldate = {2026-05-29},
journal = {Physical Review Letters},
volume = {133},
number = {7},
pages = {078101},
abstract = {We consider inhomogeneous polymers driven by energy-consuming active processes which encode temporal patterns of athermal kicks. We find that such temporal excitation programs, propagated by tension along the polymer, can effectively couple distinct polymer loci. Consequently, distant loci exhibit correlated motions that fold the polymer into specific conformations, as set by the local actions of the active processes and their distribution along the polymer. Interestingly, active kicks that are canceled out by a time-delayed echo can induce strong compaction of the active polymer.},
keywords = {Chromatin, Langevin Equation, Living Matter & Active Matter, Polymer Behavior, Polymers, Wormlike Chain Model},
pubstate = {published},
tppubtype = {article}
}
We consider inhomogeneous polymers driven by energy-consuming active processes which encode temporal patterns of athermal kicks. We find that such temporal excitation programs, propagated by tension along the polymer, can effectively couple distinct polymer loci. Consequently, distant loci exhibit correlated motions that fold the polymer into specific conformations, as set by the local actions of the active processes and their distribution along the polymer. Interestingly, active kicks that are canceled out by a time-delayed echo can induce strong compaction of the active polymer.