Thermodynamics of Trapped Photon Gases at Dimensional Crossover from 2D to 1D
arXiv:2011.06339 · doi:10.1088/1367-2630/ac4ee0
Abstract
Photon Bose-Einstein condensates are characterised by a quite weak interaction, so they behave nearly as an ideal Bose gas. Moreover, since the current experiments are conducted in a microcavity, the longitudinal motion is frozen out and the photon gas represents effectively a two-dimensional trapped gas of massive bosons. In this paper we focus on a harmonically confined ideal Bose gas in two dimensions, where the anisotropy of the confinement allows for a dimensional crossover. If the confinement in one direction is strong enough so that this squeezed direction is frozen out, then only one degree of freedom survives and the system can be considered to be quasi-one dimensional. In view of an experimental set-up we work out analytically the thermodynamic properties for such a system with a finite number of photons. In particular, we focus on examining the dimensional information which is contained in the respective thermodynamic quantities.
arXiv comment24 pages, 8 figures, submission to New Journal of Physics
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Cited by in corpus (5)
- Analytical theory of enhanced Bose-Einstein condensation in thin films
- Dimensional Crossover in a Quantum Gas of Light
- Photon BEC with Thermo-Optic Interaction at Dimensional Crossover
- Exact Diagonalisation of Photon Bose-Einstein Condensates with Thermo-Optic Interaction
- Dimensional crossover in surface growth on rectangular substrates