Mechanical inhibition of dissipation in a thermodynamically consistent active solid
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908735995117568 |
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| author | Cocconi, Luca Chatzittofi, Michalis Golestanian, Ramin |
| author_facet | Cocconi, Luca Chatzittofi, Michalis Golestanian, Ramin |
| contents | The study of active solids offers a window into the mechanics and thermodynamics of dense living matter. A key aspect of the non-equilibrium dynamics of such active systems is a mechanistic description of how the underlying mechano-chemical couplings arise, which cannot be resolved in models that are phenomenologically constructed. Here, we follow a bottom-up theoretical approach to develop a thermodynamically consistent active solid (TCAS) model, and uncover a non-trivial cross-talk that naturally ensues between mechanical response and dissipation. In particular, we show that dissipation reaches a maximum at finite stresses, while it is inhibited under large stresses, effectively reverting the system to a passive state. Our findings establish a generic mechanism plausibly responsible for the non-monotonic behaviour observed in recent experimental measurements of entropy production rate in an actomyosin material and enzymatic activity in crowded condensates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_18000 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Mechanical inhibition of dissipation in a thermodynamically consistent active solid Cocconi, Luca Chatzittofi, Michalis Golestanian, Ramin Soft Condensed Matter Statistical Mechanics The study of active solids offers a window into the mechanics and thermodynamics of dense living matter. A key aspect of the non-equilibrium dynamics of such active systems is a mechanistic description of how the underlying mechano-chemical couplings arise, which cannot be resolved in models that are phenomenologically constructed. Here, we follow a bottom-up theoretical approach to develop a thermodynamically consistent active solid (TCAS) model, and uncover a non-trivial cross-talk that naturally ensues between mechanical response and dissipation. In particular, we show that dissipation reaches a maximum at finite stresses, while it is inhibited under large stresses, effectively reverting the system to a passive state. Our findings establish a generic mechanism plausibly responsible for the non-monotonic behaviour observed in recent experimental measurements of entropy production rate in an actomyosin material and enzymatic activity in crowded condensates. |
| title | Mechanical inhibition of dissipation in a thermodynamically consistent active solid |
| topic | Soft Condensed Matter Statistical Mechanics |
| url | https://arxiv.org/abs/2506.18000 |