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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/2605.13626 |
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| _version_ | 1866911681036156928 |
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| author | Jaramillo-Gutiérrez, Jaime Torres-Arenas, José |
| author_facet | Jaramillo-Gutiérrez, Jaime Torres-Arenas, José |
| contents | Thermodynamic geometry of two-dimensional fluids has been investigated using a square-well model as a prototype fluid. A comparison with the three-dimensional case is performed in the subcritical and supercritical domains of thermodynamic space. In the subcritical region, it is found that the R-crossing method has a narrower range of validity for two-dimensional fluids compared to three-dimensional ones. On the other hand, in the supercritical region, an analysis of different Widom lines, including the R Widom line, shows that for two-dimensional fluids these lines extend further into the supercritical region than their three-dimensional counterparts. A similar behavior is observed for the validity of the Clausius--Clapeyron equation in two-dimensional fluids. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_13626 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Thermodynamic Geometry of two-dimensional square-well fluids Jaramillo-Gutiérrez, Jaime Torres-Arenas, José Statistical Mechanics Thermodynamic geometry of two-dimensional fluids has been investigated using a square-well model as a prototype fluid. A comparison with the three-dimensional case is performed in the subcritical and supercritical domains of thermodynamic space. In the subcritical region, it is found that the R-crossing method has a narrower range of validity for two-dimensional fluids compared to three-dimensional ones. On the other hand, in the supercritical region, an analysis of different Widom lines, including the R Widom line, shows that for two-dimensional fluids these lines extend further into the supercritical region than their three-dimensional counterparts. A similar behavior is observed for the validity of the Clausius--Clapeyron equation in two-dimensional fluids. |
| title | Thermodynamic Geometry of two-dimensional square-well fluids |
| topic | Statistical Mechanics |
| url | https://arxiv.org/abs/2605.13626 |