Self-Interaction Controls Vortex Scale in Soliton Mergers
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915636191428608 |
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| author | Zeng, Yuanyuan Zhang, Bokai Chen, Jiajun |
| author_facet | Zeng, Yuanyuan Zhang, Bokai Chen, Jiajun |
| contents | This study investigates the impact of self-interaction strength on the formation and scale of turbulent vortex structures during the merger of Bose stars, using numerical simulations of the Gross-Pitaevskii-Poisson (GPP) equations. We find that vortex formation is a universal outcome of soliton mergers, with the vortex size strongly dependent on the self-interaction coupling parameter $g$. Through analysis of velocity correlations, kinetic energy spectra, and vorticity distributions, we conclude that for repulsive self-interaction, the vortex region expands as self-interaction strength increases; conversely, for attractive self-interaction, the vortex region shrinks as self-interaction strength increases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_07401 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Self-Interaction Controls Vortex Scale in Soliton Mergers Zeng, Yuanyuan Zhang, Bokai Chen, Jiajun High Energy Physics - Phenomenology This study investigates the impact of self-interaction strength on the formation and scale of turbulent vortex structures during the merger of Bose stars, using numerical simulations of the Gross-Pitaevskii-Poisson (GPP) equations. We find that vortex formation is a universal outcome of soliton mergers, with the vortex size strongly dependent on the self-interaction coupling parameter $g$. Through analysis of velocity correlations, kinetic energy spectra, and vorticity distributions, we conclude that for repulsive self-interaction, the vortex region expands as self-interaction strength increases; conversely, for attractive self-interaction, the vortex region shrinks as self-interaction strength increases. |
| title | Self-Interaction Controls Vortex Scale in Soliton Mergers |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.07401 |