Bose-Einstein condensation and superfluidity of a weakly-interacting photon gas in a nonlinear Fabry-Perot cavity
A. Tanzini, S.P. Sorella
TL;DR
This paper develops a theoretical framework for photon Bose-Einstein condensation and superfluidity in a nonlinear Fabry-Perot cavity, highlighting the role of finite size effects in the condensate's existence.
Contribution
It introduces an effective 2D Hamiltonian model for photon condensation in a nonlinear cavity, incorporating finite size effects.
Findings
Photon condensate depends on finite size effects.
The photon gas dynamics are described by a complex massive scalar field.
The framework advances understanding of photon superfluidity in optical cavities.
Abstract
A field theoretical framework for the recently proposed photon condensation effect in a nonlinear Fabry-Perot cavity is discussed. The dynamics of the photon gas turns out to be described by an effective 2D Hamiltonian of a complex massive scalar field. Finite size effects are shown to be relevant for the existence of the photon condensate.
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