Disorder-induced broadening of quantum momentum distribution
Fuente:
arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866912785350262784 |
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| author | Heinonen, Vili Lukkarinen, Jani |
| author_facet | Heinonen, Vili Lukkarinen, Jani |
| contents | We study the long-time behavior of a non-interacting two-dimensional quantum gas in a weak random potential with long-range correlations. Any peaked initial momentum distribution will eventually become isotropic and broaden due to scattering events with the random potential. We derive an expression for the long-time average of the momentum distribution and test it against computer simulations. We also discuss momentum isotropization and spatial diffusion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_20170 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Disorder-induced broadening of quantum momentum distribution Heinonen, Vili Lukkarinen, Jani Quantum Physics Quantum Gases Statistical Mechanics We study the long-time behavior of a non-interacting two-dimensional quantum gas in a weak random potential with long-range correlations. Any peaked initial momentum distribution will eventually become isotropic and broaden due to scattering events with the random potential. We derive an expression for the long-time average of the momentum distribution and test it against computer simulations. We also discuss momentum isotropization and spatial diffusion. |
| title | Disorder-induced broadening of quantum momentum distribution |
| topic | Quantum Physics Quantum Gases Statistical Mechanics |
| url | https://arxiv.org/abs/2512.20170 |