What question did this study set out to answer?

This research aims to develop a lumping method to accurately capture the entropy production in nanoscale dynamics.

December 19, 2025Open Access

Coarse-Graining via Lumping: Exact Calculations and Fundamental Limitations

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Authors

GTGianluca TezaMax Planck Institute for the Physics of Complex Systems ASAttilio L. StellaUniversity of Padua TGTrevor GrandPreNorthwestern University

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Implication

Lumping method demonstrates accurate mean entropy production with time-reversibility violations in nanoscale systems, indicating new inference strategies.

Key Points

This research aims to develop a lumping method to accurately capture the entropy production in nanoscale dynamics.
Introduced a lumping method to build an effective semi-Markov model.
Calculated the full entropy-production statistics of microscopic dynamics.
Assessed the accuracy of mean entropy production with merged hidden cycles.
Mean entropy production remains accurate despite loss of higher-order information.
Captured violations of fluctuation theorems in line with experimental observations.
Provided pathways for novel inference strategies beyond equilibrium conditions.

Cite This Study

Teza et al. (2025) studied this question.

synapsesocial.com/papers/69449a922f0218eca9508836 https://doi.org/10.48550/arxiv.2512.11974

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Implication

Lumping method demonstrates accurate mean entropy production with time-reversibility violations in nanoscale systems, indicating new inference strategies.

Coarse-Graining via Lumping: Exact Calculations and Fundamental Limitations

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Implication

Key Points

Cite This Study

Coarse-Graining via Lumping: Exact Calculations and Fundamental Limitations

Discussion

Member takes

Implication

Key Points

Cite This Study

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