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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.21367 |
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| _version_ | 1866918355507609600 |
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| author | Lier, Ruben Matus, Paweł |
| author_facet | Lier, Ruben Matus, Paweł |
| contents | We study a two-dimensional fluid of hard disks undergoing chiral, energy- and momentum-conserving collisions. We show that despite the microscopic breaking of time-reversal symmetry, the H-theorem is obeyed, guaranteeing a relaxation towards equilibrium in the absence of external forces. In the dilute limit, a Chapman-Enskog expansion yields analytical expressions for the shear and odd viscosity and the thermal conductivity. Theoretical predictions are confirmed by nonequilibrium molecular dynamics simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_21367 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Chapman-Enskog expansion for chirally colliding disks Lier, Ruben Matus, Paweł Soft Condensed Matter Fluid Dynamics We study a two-dimensional fluid of hard disks undergoing chiral, energy- and momentum-conserving collisions. We show that despite the microscopic breaking of time-reversal symmetry, the H-theorem is obeyed, guaranteeing a relaxation towards equilibrium in the absence of external forces. In the dilute limit, a Chapman-Enskog expansion yields analytical expressions for the shear and odd viscosity and the thermal conductivity. Theoretical predictions are confirmed by nonequilibrium molecular dynamics simulations. |
| title | Chapman-Enskog expansion for chirally colliding disks |
| topic | Soft Condensed Matter Fluid Dynamics |
| url | https://arxiv.org/abs/2602.21367 |