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| Main Author: | |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.20454 |
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| _version_ | 1866912341327609856 |
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| author | Stepanyan, Varazdat |
| author_facet | Stepanyan, Varazdat |
| contents | Theory and experiment have long discussed negative thermodynamic pressure states, but their microscopic origins are unclear. I address this problem within the framework of quantum thermodynamics. I show that the pressure exerted on the boundary is positive when there is no interaction with the boundary. This is formalized by a no-go theorem that holds for any quantum state with finite motion. As a consequence of this analysis, I deduce a general formula for quantum non-equilibrium pressure. It is believed that stable negative pressure states cannot exist in gases. I provide solvable examples of quantum and classical gases, where negative pressure is achieved due to a suitable coupling with the boundary walls. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_20454 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Negative thermodynamic pressure: no-go theorem and yes-go examples Stepanyan, Varazdat Quantum Physics Statistical Mechanics Theory and experiment have long discussed negative thermodynamic pressure states, but their microscopic origins are unclear. I address this problem within the framework of quantum thermodynamics. I show that the pressure exerted on the boundary is positive when there is no interaction with the boundary. This is formalized by a no-go theorem that holds for any quantum state with finite motion. As a consequence of this analysis, I deduce a general formula for quantum non-equilibrium pressure. It is believed that stable negative pressure states cannot exist in gases. I provide solvable examples of quantum and classical gases, where negative pressure is achieved due to a suitable coupling with the boundary walls. |
| title | Negative thermodynamic pressure: no-go theorem and yes-go examples |
| topic | Quantum Physics Statistical Mechanics |
| url | https://arxiv.org/abs/2409.20454 |