Quantum vs Classical Thermal Transport at Low Temperatures
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
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| _version_ | 1866912905354543104 |
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| author | Zou, Zhixing Gong, Jiangbin Wang, Jiao Casati, Giulio Benenti, Giuliano |
| author_facet | Zou, Zhixing Gong, Jiangbin Wang, Jiao Casati, Giulio Benenti, Giuliano |
| contents | This work aims to understand how quantum mechanics affects heat transport at low temperatures. In the classical setting, by considering a simple paradigmatic model, our simulations reveal the emergence of Negative Differential Thermal Resistance (NDTR): paradoxically, increasing the temperature bias by lowering the cold bath temperature reduces the steady-state heat current. In sharp contrast, the quantum version of the model, treated via a Lindblad master equation, exhibits no NDTR: the heat current increases monotonically with thermal bias. This marked divergence highlights the fundamental role of quantum effects in low-temperature thermal transport and underscores the need to reconsider classical predictions when designing and optimizing nanoscale thermal devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_14027 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum vs Classical Thermal Transport at Low Temperatures Zou, Zhixing Gong, Jiangbin Wang, Jiao Casati, Giulio Benenti, Giuliano Statistical Mechanics Quantum Physics This work aims to understand how quantum mechanics affects heat transport at low temperatures. In the classical setting, by considering a simple paradigmatic model, our simulations reveal the emergence of Negative Differential Thermal Resistance (NDTR): paradoxically, increasing the temperature bias by lowering the cold bath temperature reduces the steady-state heat current. In sharp contrast, the quantum version of the model, treated via a Lindblad master equation, exhibits no NDTR: the heat current increases monotonically with thermal bias. This marked divergence highlights the fundamental role of quantum effects in low-temperature thermal transport and underscores the need to reconsider classical predictions when designing and optimizing nanoscale thermal devices. |
| title | Quantum vs Classical Thermal Transport at Low Temperatures |
| topic | Statistical Mechanics Quantum Physics |
| url | https://arxiv.org/abs/2509.14027 |