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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.15094 |
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| _version_ | 1866911324042166272 |
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| author | Li, Xin-Peng Zhang, Hao-Ran Cui, Zhu-Fang Klähn, Thomas |
| author_facet | Li, Xin-Peng Zhang, Hao-Ran Cui, Zhu-Fang Klähn, Thomas |
| contents | The equation of state of hot, dense nuclear matter plays a fundamental role in many areas. However, owing to the nonperturbative nature of strong interactions, a reliable treatment is still under debate. We use a symmetry-preserving treatment of a vector\,$\otimes$\,vector contact interaction to study related issues at nonzero temperature or quark chemical potential, and carefully compare a noncovariant and a covariant regularization scheme. The numerical results show that the character of the phase transition depends sensitively on the regularization scheme and parameter choices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_15094 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Crossover or First-Order: Impacts of Regularization Li, Xin-Peng Zhang, Hao-Ran Cui, Zhu-Fang Klähn, Thomas High Energy Physics - Phenomenology Nuclear Theory The equation of state of hot, dense nuclear matter plays a fundamental role in many areas. However, owing to the nonperturbative nature of strong interactions, a reliable treatment is still under debate. We use a symmetry-preserving treatment of a vector\,$\otimes$\,vector contact interaction to study related issues at nonzero temperature or quark chemical potential, and carefully compare a noncovariant and a covariant regularization scheme. The numerical results show that the character of the phase transition depends sensitively on the regularization scheme and parameter choices. |
| title | Crossover or First-Order: Impacts of Regularization |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2512.15094 |