Chiral and deconfinement transitions in spin-polarized quark matter
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866916950342369280 |
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| author | Farias, Ricardo L. S. Tavares, William R. |
| author_facet | Farias, Ricardo L. S. Tavares, William R. |
| contents | We investigate the influence of spin polarization in strongly interacting matter by introducing a finite spin potential, $μ_Σ$, which effectively controls the spin density of the system without requiring rotation or specific boundary conditions. Inspired by recent lattice QCD simulations that incorporated such a potential, we implement this approach within an effective QCD framework. Our results show that increasing spin polarization leads to a simultaneous decrease in both the chiral and deconfinement restoration temperatures. The resulting phase structure is qualitatively consistent with lattice findings, and notably, we observe the emergence of a first-order chiral phase transition at low temperature. These results suggest that spin-polarized environments can significantly impact the QCD phase diagram and offer a controlled route for studying spin effects in hot and dense matter. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_08130 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chiral and deconfinement transitions in spin-polarized quark matter Farias, Ricardo L. S. Tavares, William R. High Energy Physics - Phenomenology High Energy Physics - Lattice High Energy Physics - Theory Nuclear Theory We investigate the influence of spin polarization in strongly interacting matter by introducing a finite spin potential, $μ_Σ$, which effectively controls the spin density of the system without requiring rotation or specific boundary conditions. Inspired by recent lattice QCD simulations that incorporated such a potential, we implement this approach within an effective QCD framework. Our results show that increasing spin polarization leads to a simultaneous decrease in both the chiral and deconfinement restoration temperatures. The resulting phase structure is qualitatively consistent with lattice findings, and notably, we observe the emergence of a first-order chiral phase transition at low temperature. These results suggest that spin-polarized environments can significantly impact the QCD phase diagram and offer a controlled route for studying spin effects in hot and dense matter. |
| title | Chiral and deconfinement transitions in spin-polarized quark matter |
| topic | High Energy Physics - Phenomenology High Energy Physics - Lattice High Energy Physics - Theory Nuclear Theory |
| url | https://arxiv.org/abs/2507.08130 |