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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/2508.14183 |
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| _version_ | 1866911111464353792 |
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| author | Pandit, Tanmoy Chattopadhyay, Pritam Chatterjee, Kaustav Singh, Varinder |
| author_facet | Pandit, Tanmoy Chattopadhyay, Pritam Chatterjee, Kaustav Singh, Varinder |
| contents | We investigate a three-level maser quantum thermal machine in which the system-reservoir interaction is modeled via Unruh-DeWitt type coupling, with one or both reservoirs undergoing relativistic motion relative to the working medium. Motion induces Doppler reshaping of the reservoir spectra, modifying energy-exchange rates and enabling operation beyond the Carnot efficiency at finite power. We numerically analyze families of efficiency-power curves and extract the analytic form of a generalized Carnot bound, which recovers the Carnot limit. In addition, Doppler reshaping alters the boundaries between heat-engine and refrigerator operation, making it possible to extract positive work even in the absence of a temperature gradient. These findings establish relativistic motion as a genuine thermodynamic resource. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_14183 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Relativistic Quantum Thermal Machine: Harnessing Relativistic Effects to Surpass Carnot Efficiency Pandit, Tanmoy Chattopadhyay, Pritam Chatterjee, Kaustav Singh, Varinder Quantum Physics High Energy Physics - Theory We investigate a three-level maser quantum thermal machine in which the system-reservoir interaction is modeled via Unruh-DeWitt type coupling, with one or both reservoirs undergoing relativistic motion relative to the working medium. Motion induces Doppler reshaping of the reservoir spectra, modifying energy-exchange rates and enabling operation beyond the Carnot efficiency at finite power. We numerically analyze families of efficiency-power curves and extract the analytic form of a generalized Carnot bound, which recovers the Carnot limit. In addition, Doppler reshaping alters the boundaries between heat-engine and refrigerator operation, making it possible to extract positive work even in the absence of a temperature gradient. These findings establish relativistic motion as a genuine thermodynamic resource. |
| title | Relativistic Quantum Thermal Machine: Harnessing Relativistic Effects to Surpass Carnot Efficiency |
| topic | Quantum Physics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2508.14183 |