Thermal Purcell effect and cavity-induced renormalization of dissipations

• URL: http://arxiv.org/abs/2310.15184v3
• Date: Wed, 02 Oct 2024 13:29:46 GMT
• Title: Thermal Purcell effect and cavity-induced renormalization of dissipations
• Authors: Giuliano Chiriacò,
• Abstract summary: I derive a simple expression for the radiative heat power absorbed by the material. I investigate how it changes in the presence of a cavity and show that it is enhanced dramatically for appropriate cavity geometries.
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• Abstract: In recent years there has been great interest towards optical cavities as a tool to manipulate the properties and phases of embedded quantum materials. Due to the Purcell effect, a cavity changes the photon phase space and thus the rate of electromagnetic transitions within the material, modifying the exchange rate of heat radiation with the photon environment. Here, I derive a simple expression for the radiative heat power absorbed by the material, investigate how it changes in the presence of a cavity and show that it is enhanced dramatically for appropriate cavity geometries. I compare this effect with typical energy dissipation processes, provide a criterion to establish its impact on the temperature of a material coupled to the cavity and apply it to 1T-TaS$_2$.

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