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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.10889 |
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| _version_ | 1866915933860134912 |
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| author | Wang, Wu Luo, Yuqi Sun, Fei Wang, Sa Deng, Jungang Xie, Wei Li, Shuang Wu, Kejun |
| author_facet | Wang, Wu Luo, Yuqi Sun, Fei Wang, Sa Deng, Jungang Xie, Wei Li, Shuang Wu, Kejun |
| contents | We present a self-consistent framework for heavy-quark transport in the quark-gluon plasma across the QCD crossover region. By synthesizing perturbative and non-perturbative interactions into a unified interaction kernel, we circumvent the traditional reliance on arbitrary soft-hard momentum separation scales. The interaction is governed by an in-medium effective potential, incorporating short-range Yukawa screening and long-range confining string contributions, both rigorously constrained by the latest lattice QCD data. Our results reveal that the non-perturbative string tension is indispensable for capturing the extreme opacity of the medium near the critical temperature $T_c$. Specifically, our model predicts a spatial diffusion coefficient of $2πT D_s \approx 0.5 \sim 1.7$, demonstrating a striking quantitative agreement with the recent lattice QCD extractions. Ultimately, our results provide a robust dynamical interpretation of the strong heavy-quark coupling near the QCD crossover and offer a unified framework for describing heavy-flavor transport in hot and dense QCD matter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_10889 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Heavy-quark transport across the QCD crossover driven by a lattice-constrained in-medium potential Wang, Wu Luo, Yuqi Sun, Fei Wang, Sa Deng, Jungang Xie, Wei Li, Shuang Wu, Kejun High Energy Physics - Phenomenology We present a self-consistent framework for heavy-quark transport in the quark-gluon plasma across the QCD crossover region. By synthesizing perturbative and non-perturbative interactions into a unified interaction kernel, we circumvent the traditional reliance on arbitrary soft-hard momentum separation scales. The interaction is governed by an in-medium effective potential, incorporating short-range Yukawa screening and long-range confining string contributions, both rigorously constrained by the latest lattice QCD data. Our results reveal that the non-perturbative string tension is indispensable for capturing the extreme opacity of the medium near the critical temperature $T_c$. Specifically, our model predicts a spatial diffusion coefficient of $2πT D_s \approx 0.5 \sim 1.7$, demonstrating a striking quantitative agreement with the recent lattice QCD extractions. Ultimately, our results provide a robust dynamical interpretation of the strong heavy-quark coupling near the QCD crossover and offer a unified framework for describing heavy-flavor transport in hot and dense QCD matter. |
| title | Heavy-quark transport across the QCD crossover driven by a lattice-constrained in-medium potential |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2604.10889 |