• Corpus ID: 204788997

Non-reciprocal hidden degrees of freedom: A unifying perspective on memory, feedback, and activity

  title={Non-reciprocal hidden degrees of freedom: A unifying perspective on memory, feedback, and activity},
  author={Sarah A. M. Loos and Simon Hermann and Sabine H. L. Klapp},
  journal={arXiv: Statistical Mechanics},
We show that memory, feedback, and activity are all describable by the same unifying concept, that is non-reciprocal (NR) coupling. We demonstrate that characteristic thermodynamic features of these intrinsically nonequilibrium systems are reproduced by low-dimensional Markovian networks with NR coupling, which we establish as minimal models for such complex systems. NR coupling alone implies a violation of the fluctuation-dissipation relation, which is inevitably connected to entropy… 

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