When does nonreciprocity matter? Scale-dependence and nonequilibrium signatures
Abstract
Nonreciprocity is increasingly recognized as a unifying concept linking diverse nonequilibrium phenomena found across physics, chemistry, and biology. It gives rise to distinctive behavior including run-and-chase dynamics and spatio-temporal patterns, often associated with a breaking of time-reversal symmetry. However, nonreciprocity and its nonequilibrium signatures are fundamentally scale-dependent, and may emerge or disappear under coarse-graining. A central challenge is therefore to understand when and how nonreciprocity manifests itself on different scales, for example via irreversible fluctuations or macroscopic currents. In this Perspective, we discuss the physical origin and fate of effective nonreciprocal interactions and the characteristic irreversible dynamics they give rise to across scales.
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BibTeX
@misc{loos2026when,
title = {{When does nonreciprocity matter? Scale-dependence and nonequilibrium signatures}},
author = {Sarah A. M. Loos and Robert L. Jack},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.08820},
eprint = {2609.08820},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.08820},
}
RIS
TY - UNPB
TI - When does nonreciprocity matter? Scale-dependence and nonequilibrium signatures
AU - Sarah A. M. Loos
AU - Robert L. Jack
PY - 2026
DA - 2026/09/08
PB - arXiv
DO - 10.48550/arxiv.2609.08820
UR - https://arxiv.org/abs/2609.08820
AB - Nonreciprocity is increasingly recognized as a unifying concept linking diverse nonequilibrium phenomena found across physics, chemistry, and biology. It gives rise to distinctive behavior including run-and-chase dynamics and spatio-temporal patterns, often associated with a breaking of time-reversal symmetry. However, nonreciprocity and its nonequilibrium signatures are fundamentally scale-dependent, and may emerge or disappear under coarse-graining. A central challenge is therefore to understand when and how nonreciprocity manifests itself on different scales, for example via irreversible fluctuations or macroscopic currents. In this Perspective, we discuss the physical origin and fate of effective nonreciprocal interactions and the characteristic irreversible dynamics they give rise to across scales.
ER -