Fluctuation Dissipation Relations for Active Field Theories
Fuente:
arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866915511997038592 |
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| author | Johnsrud, Martin Kjøllesdal Golestanian, Ramin |
| author_facet | Johnsrud, Martin Kjøllesdal Golestanian, Ramin |
| contents | Breakdown of time-reversal symmetry is a defining property of non-equilibrium systems, such as active matter, which is composed of units that consume energy. We employ a formalism that allows us to derive a class of identities associated with the time-reversal transformation in non-equilibrium field theories, in the spirit of Ward-Takahashi identities. We present a generalization of the fluctuation-dissipation theorem valid for active systems as a particular realization of such an identity, and consider its implications and applications for a range of active field theories. The field theoretical toolbox developed here helps to quantify the degree of non-equilibrium activity of complex systems exhibiting collective behavior. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_14977 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Fluctuation Dissipation Relations for Active Field Theories Johnsrud, Martin Kjøllesdal Golestanian, Ramin Statistical Mechanics Soft Condensed Matter Breakdown of time-reversal symmetry is a defining property of non-equilibrium systems, such as active matter, which is composed of units that consume energy. We employ a formalism that allows us to derive a class of identities associated with the time-reversal transformation in non-equilibrium field theories, in the spirit of Ward-Takahashi identities. We present a generalization of the fluctuation-dissipation theorem valid for active systems as a particular realization of such an identity, and consider its implications and applications for a range of active field theories. The field theoretical toolbox developed here helps to quantify the degree of non-equilibrium activity of complex systems exhibiting collective behavior. |
| title | Fluctuation Dissipation Relations for Active Field Theories |
| topic | Statistical Mechanics Soft Condensed Matter |
| url | https://arxiv.org/abs/2409.14977 |