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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.06321 |
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| _version_ | 1866912317133815808 |
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| author | Blumenfeld, Raphael Matsushima, Takashi Zhang, Jie |
| author_facet | Blumenfeld, Raphael Matsushima, Takashi Zhang, Jie |
| contents | We argue that a number of recent experimental and numerical observations point to an ongoing cooperative stress-structure self-organisation (SO) in quasi-static granular dynamics. These observations include: a) detail-insensitive collapses of certain quantities; b) correlations between stress and structure and evidence of entropy-stability competition in settled packings, which cast doubt on most linear stress theories of granular materials; c) detailed balanced steady states, which seem contradictory to the common belief that only systems in thermal equilibrium satisfy detailed balance, but are not, as we explain. We then propose a new statistical mechanical formulation that takes into account the cooperative SO. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_06321 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Self-organization, detailed balance, and stress-structure correlations in 2D granular dynamics Blumenfeld, Raphael Matsushima, Takashi Zhang, Jie Statistical Mechanics We argue that a number of recent experimental and numerical observations point to an ongoing cooperative stress-structure self-organisation (SO) in quasi-static granular dynamics. These observations include: a) detail-insensitive collapses of certain quantities; b) correlations between stress and structure and evidence of entropy-stability competition in settled packings, which cast doubt on most linear stress theories of granular materials; c) detailed balanced steady states, which seem contradictory to the common belief that only systems in thermal equilibrium satisfy detailed balance, but are not, as we explain. We then propose a new statistical mechanical formulation that takes into account the cooperative SO. |
| title | Self-organization, detailed balance, and stress-structure correlations in 2D granular dynamics |
| topic | Statistical Mechanics |
| url | https://arxiv.org/abs/2504.06321 |