A Drive towards Thermodynamic Efficiency for Dissipative Structures in Chemical Reaction Networks
| Autor: | Karl J. Friston, Lancelot Da Costa, Kai Ueltzhöffer, Daniela Cialfi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Structure formation Hierarchy (mathematics) Science QC1-999 dissipative structures General Physics and Astronomy thermodynamic efficiency chemical reaction networks Astrophysics Article QB460-466 Entropy (classical thermodynamics) Mechanism (philosophy) Simple (abstract algebra) Metastability Dissipative system Statistical physics stochastic thermodynamics Convection cell |
| Zdroj: | Entropy Volume 23 Issue 9 Entropy, Vol 23, Iss 1115, p 1115 (2021) |
| ISSN: | 1099-4300 |
| Popis: | Dissipative accounts of structure formation show that the self-organisation of complex structures is thermodynamically favoured, whenever these structures dissipate free energy that could not be accessed otherwise. These structures therefore open transition channels for the state of the universe to move from a frustrated, metastable state to another metastable state of higher entropy. However, these accounts apply as well to relatively simple, dissipative systems, such as convection cells, hurricanes, candle flames, lightning strikes, or mechanical cracks, as they do to complex biological systems. Conversely, interesting computational properties—that characterize complex biological systems, such as efficient, predictive representations of environmental dynamics—can be linked to the thermodynamic efficiency of underlying physical processes. However, the potential mechanisms that underwrite the selection of dissipative structures with thermodynamically efficient subprocesses is not completely understood. We address these mechanisms by explaining how bifurcation-based, work-harvesting processes—required to sustain complex dissipative structures—might be driven towards thermodynamic efficiency. We first demonstrate a simple mechanism that leads to self-selection of efficient dissipative structures in a stochastic chemical reaction network, when the dissipated driving chemical potential difference is decreased. We then discuss how such a drive can emerge naturally in a hierarchy of self-similar dissipative structures, each feeding on the dissipative structures of a previous level, when moving away from the initial, driving disequilibrium. |
| Databáze: | OpenAIRE |
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