Mutual Friction in Dissipative Gross-Pitaevskii Thermal Counterflow Turbulence
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866910255390130176 |
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| author | Yoshida, Kyo Miura, Hideaki Tsuji, Yoshiyuki |
| author_facet | Yoshida, Kyo Miura, Hideaki Tsuji, Yoshiyuki |
| contents | We report numerical simulations of the dissipative Gross-Pitaevskii equation for a bulk region of thermal-counterflow turbulence. Quasistationary states are obtained over a range of forcing, damping, and healing-length parameters. The mutual-friction acceleration exhibits cubic scaling with the mean relative velocity between the superfluid and normal-fluid components, and the coefficient of this scaling is linked to the phenomenological damping parameter. The intervortex spacing follows the expected dimensional scaling in the weak-forcing regime. Comparison with a straight-vortex-line model suggests that the vortex-line orientations are nearly isotropic. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_25915 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Mutual Friction in Dissipative Gross-Pitaevskii Thermal Counterflow Turbulence Yoshida, Kyo Miura, Hideaki Tsuji, Yoshiyuki Other Condensed Matter Fluid Dynamics We report numerical simulations of the dissipative Gross-Pitaevskii equation for a bulk region of thermal-counterflow turbulence. Quasistationary states are obtained over a range of forcing, damping, and healing-length parameters. The mutual-friction acceleration exhibits cubic scaling with the mean relative velocity between the superfluid and normal-fluid components, and the coefficient of this scaling is linked to the phenomenological damping parameter. The intervortex spacing follows the expected dimensional scaling in the weak-forcing regime. Comparison with a straight-vortex-line model suggests that the vortex-line orientations are nearly isotropic. |
| title | Mutual Friction in Dissipative Gross-Pitaevskii Thermal Counterflow Turbulence |
| topic | Other Condensed Matter Fluid Dynamics |
| url | https://arxiv.org/abs/2605.25915 |