SAMOP 2023 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 4: Quantum Effects (QED) (joint session Q/A)

A 4.4: Vortrag

Montag, 6. März 2023, 11:45–12:00, F442

Heat transport using nonreciprocal media — •Nico Strauß, Stefan Yoshi Buhmann, and Omar Jesús Franca Santiago — Institute of Physics, University of Kassel, Germany

The second law of thermodynamics dictates that heat flows from warm to cold objects, thereby providing a direction of time [1]. In the optics of nonreciprocal media [2], an arrow of time is alternatively provided by the observation that optical paths cannot be reversed. How are these two notions compatible of the level of quantum electrodynamics? In order to answer this question, we calculate the nanoscale heat transfer between the surfaces of two nonreciprocal media, namely axionic topological insulators which exhibit a temperature difference ΔT=T₁−T₂ . We investigate the impact of the nonreciprocal properties of the plates on the heat transfer and investigate their interplay with the second law in the near field.

[1] Volokitin, A. I.; Persson, B. N. J. Rev. Mod. Phys. 4, 79 (2007)

[2] S. Y. Buhmann et al., New J. Phys. 14, 083034 (2012).