The origin of KPZ-scaling in arrays of polariton condensates
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866915934475649024 |
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| author | Novokreschenov, Denis Kavokin, Alexey |
| author_facet | Novokreschenov, Denis Kavokin, Alexey |
| contents | This work investigates the origin of Kardar-Parisi-Zhang (KPZ) scaling in the phase dynamics of one-dimensional and two-dimensional polariton condensates. We demonstrate that the key mechanism leading to the observed power laws for the first-order correlation function $g^{(1)}$ is the fluctuation of the population of Goldstone modes, which arise due to the spontaneous breaking of $U(1)$ symmetry. Numerical simulations and analytical theory confirm that the critical exponents describing the KPZ universality class directly follow from the dynamics of Goldstone excitations. Our results establish a direct connection between the microscopic parameters of arrays of exciton-polariton condensates and the coherent properties of the light they emit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_00905 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The origin of KPZ-scaling in arrays of polariton condensates Novokreschenov, Denis Kavokin, Alexey Mesoscale and Nanoscale Physics This work investigates the origin of Kardar-Parisi-Zhang (KPZ) scaling in the phase dynamics of one-dimensional and two-dimensional polariton condensates. We demonstrate that the key mechanism leading to the observed power laws for the first-order correlation function $g^{(1)}$ is the fluctuation of the population of Goldstone modes, which arise due to the spontaneous breaking of $U(1)$ symmetry. Numerical simulations and analytical theory confirm that the critical exponents describing the KPZ universality class directly follow from the dynamics of Goldstone excitations. Our results establish a direct connection between the microscopic parameters of arrays of exciton-polariton condensates and the coherent properties of the light they emit. |
| title | The origin of KPZ-scaling in arrays of polariton condensates |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2604.00905 |