$T \times μ$ phase diagram from a fractal NJL model
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866908964522819584 |
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| author | Megias, E. Deppman, A. Timóteo, V. S. |
| author_facet | Megias, E. Deppman, A. Timóteo, V. S. |
| contents | We propose a $μ$-dependent coupling for a fractal effective model (FNJL) to make the results for the phase diagram compatible with the experimental data and lattice QCD calculations. The $μ$-dependence of the coupling, which accounts for gluon effects, is obtained by fitting the lattice QCD results for the pseudo-critical temperature with the fractal model. We then use the new effective coupling in order to compute the dynamical mass, the quark condensate, the thermal susceptibility and, finally, the $T\timesμ$ phase diagram. We consider both extensive and non-extensive statistics, and with a slight variation in the $μ$-dependent coupling parameters we provide a single result for our model which is able to describe incredibly well the data from STAR, considering the simplicity of the effective model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_08396 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | $T \times μ$ phase diagram from a fractal NJL model Megias, E. Deppman, A. Timóteo, V. S. High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Theory We propose a $μ$-dependent coupling for a fractal effective model (FNJL) to make the results for the phase diagram compatible with the experimental data and lattice QCD calculations. The $μ$-dependence of the coupling, which accounts for gluon effects, is obtained by fitting the lattice QCD results for the pseudo-critical temperature with the fractal model. We then use the new effective coupling in order to compute the dynamical mass, the quark condensate, the thermal susceptibility and, finally, the $T\timesμ$ phase diagram. We consider both extensive and non-extensive statistics, and with a slight variation in the $μ$-dependent coupling parameters we provide a single result for our model which is able to describe incredibly well the data from STAR, considering the simplicity of the effective model. |
| title | $T \times μ$ phase diagram from a fractal NJL model |
| topic | High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Theory |
| url | https://arxiv.org/abs/2509.08396 |