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Peer-reviewedCC BYPhysical Review Letters

Superballistic Transport of Thermal Photons in Confined Many-Body Systems

  • Jian Dong
  • Junming Zhao
  • Philippe Ben-Abdallah
  • Linhua Liu
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Abstract

Ballistic transport, realized when the system size is smaller than the mean free path of energy carriers, is traditionally regarded as the ultimate limit for energy transfer. Here, we predict a superballistic radiative heat transport regime that surpasses this limit in dilute chains of plasmonic nanoparticles confined within cavities. This anomalous regime exhibits superlinear scaling of the effective thermal conductivity (k ~L^1.5) and originates from the amplification of long-range interactions mediated by cavity-guided modes. Our results establish a framework for ultrafast photonic heat transport and open pathways for thermal management, information processing and energy transfer in quantum and nanoscale systems.

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Cite

BibTeXRIS
BibTeX
@article{dong2026superballistic,
  title = {{Superballistic Transport of Thermal Photons in Confined Many-Body Systems}},
  author = {Jian Dong and Junming Zhao and Philippe Ben-Abdallah and Linhua Liu},
  journal = {Physical Review Letters},
  year = {2026},
  month = sep,
  doi = {10.1103/yxqz-j6dv},
  url = {https://hal.science/hal-05760318v1},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Superballistic Transport of Thermal Photons in Confined Many-Body Systems
AU  - Jian Dong
AU  - Junming Zhao
AU  - Philippe Ben-Abdallah
AU  - Linhua Liu
PY  - 2026
DA  - 2026/09/10
JO  - Physical Review Letters
DO  - 10.1103/yxqz-j6dv
UR  - https://hal.science/hal-05760318v1
AB  - Ballistic transport, realized when the system size is smaller than the mean free path of energy carriers, is traditionally regarded as the ultimate limit for energy transfer. Here, we predict a superballistic radiative heat transport regime that surpasses this limit in dilute chains of plasmonic nanoparticles confined within cavities. This anomalous regime exhibits superlinear scaling of the effective thermal conductivity (k ~L^1.5) and originates from the amplification of long-range interactions mediated by cavity-guided modes. Our results establish a framework for ultrafast photonic heat transport and open pathways for thermal management, information processing and energy transfer in quantum and nanoscale systems.
SN  - 0031-9007
SN  - 1079-7114
ER  -