Entropy production of active Brownian particles going from liquid to hexatic and solid phases
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913606113689600 |
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| author | Semeraro, Massimiliano Negro, Giuseppe Suma, Antonio Corberi, Federico Gonnella, Giuseppe |
| author_facet | Semeraro, Massimiliano Negro, Giuseppe Suma, Antonio Corberi, Federico Gonnella, Giuseppe |
| contents | Due to its inherent intertwinement with irreversibility, entropy production is a prime observable to monitor in systems of active particles. In this numerical study, entropy production in the liquid, hexatic and solid phases of a two-dimensional system of active Brownian particles is examined at both average and fluctuation level. The trends of averages as functions of density show no singularity and marked changes in their derivatives at the hexatic-solid transition. Distributions show instead peculiar tail structures interpreted by looking at microscopic configurations. Particles in regions of low local order generate tail values according to different dynamical mechanisms: they move towards empty regions or bounce back and forth into close neighbours. The tail structures are reproduced by a simple single-particle model including an intermittent harmonic potential. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_07669 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Entropy production of active Brownian particles going from liquid to hexatic and solid phases Semeraro, Massimiliano Negro, Giuseppe Suma, Antonio Corberi, Federico Gonnella, Giuseppe Soft Condensed Matter Due to its inherent intertwinement with irreversibility, entropy production is a prime observable to monitor in systems of active particles. In this numerical study, entropy production in the liquid, hexatic and solid phases of a two-dimensional system of active Brownian particles is examined at both average and fluctuation level. The trends of averages as functions of density show no singularity and marked changes in their derivatives at the hexatic-solid transition. Distributions show instead peculiar tail structures interpreted by looking at microscopic configurations. Particles in regions of low local order generate tail values according to different dynamical mechanisms: they move towards empty regions or bounce back and forth into close neighbours. The tail structures are reproduced by a simple single-particle model including an intermittent harmonic potential. |
| title | Entropy production of active Brownian particles going from liquid to hexatic and solid phases |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2412.07669 |