Thermodynamics of trapped photon gases at dimensional crossover from 2D to 1D
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 trappe...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ac4ee0 |
| _version_ | 1797748513601224704 |
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| author | Enrico Stein Axel Pelster |
| author_facet | Enrico Stein Axel Pelster |
| author_sort | Enrico Stein |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T16:06:51Z |
| format | Article |
| id | doaj.art-b681c0e8da4f4d86b3abacc5aa39585c |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:06:51Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
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| series | New Journal of Physics |
| spelling | doaj.art-b681c0e8da4f4d86b3abacc5aa39585c2023-08-09T14:20:38ZengIOP PublishingNew Journal of Physics1367-26302022-01-0124202301310.1088/1367-2630/ac4ee0Thermodynamics of trapped photon gases at dimensional crossover from 2D to 1DEnrico Stein0https://orcid.org/0000-0003-4820-7126Axel Pelster1https://orcid.org/0000-0002-5215-0348Department of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, GermanyDepartment of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern , Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, GermanyPhoton 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.https://doi.org/10.1088/1367-2630/ac4ee0photon BECdimensional crossoverthermodynamics |
| spellingShingle | Enrico Stein Axel Pelster Thermodynamics of trapped photon gases at dimensional crossover from 2D to 1D New Journal of Physics photon BEC dimensional crossover thermodynamics |
| title | Thermodynamics of trapped photon gases at dimensional crossover from 2D to 1D |
| title_full | Thermodynamics of trapped photon gases at dimensional crossover from 2D to 1D |
| title_fullStr | Thermodynamics of trapped photon gases at dimensional crossover from 2D to 1D |
| title_full_unstemmed | Thermodynamics of trapped photon gases at dimensional crossover from 2D to 1D |
| title_short | Thermodynamics of trapped photon gases at dimensional crossover from 2D to 1D |
| title_sort | thermodynamics of trapped photon gases at dimensional crossover from 2d to 1d |
| topic | photon BEC dimensional crossover thermodynamics |
| url | https://doi.org/10.1088/1367-2630/ac4ee0 |
| work_keys_str_mv | AT enricostein thermodynamicsoftrappedphotongasesatdimensionalcrossoverfrom2dto1d AT axelpelster thermodynamicsoftrappedphotongasesatdimensionalcrossoverfrom2dto1d |