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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/2507.03708 |
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| _version_ | 1866912466008539136 |
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| author | Sahoo, Bhagyarathi Pradhan, Kshitish Kumar Sahu, Dushmanta Sahoo, Raghunath |
| author_facet | Sahoo, Bhagyarathi Pradhan, Kshitish Kumar Sahu, Dushmanta Sahoo, Raghunath |
| contents | We study the effect of rotation and the consequent angular momentum fluctuations in a hadron resonance gas produced in ultra-relativistic heavy ion collisions. The rotational susceptibilities ($χ_{\rm ω}$, $χ^{2}_{\rm ω}$, etc.), which quantify how much the system responds to a small angular velocity, are estimated for the first time, considering that these can be valuable indicators of the QCD phase transition. The higher-order rotational susceptibilities and their ratios are estimated in the presence and absence of baryon chemical potential ($μ_{\rm B}$) in the system. The effect of particle spin ($s$) and rotational chemical potential ($ω$) on the fluctuation of the angular momentum is studied. To consider a more realistic scenario, the effect of interactions between hadrons is taken into account by considering van der Waals-like interactions, which include both attractive and repulsive interactions. A phase transition, absent in an ideal hadron gas model, can be observed in an interacting hadron gas model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_03708 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rotational susceptibility of a hot and dense hadronic matter: A possible probe of QCD phase transition Sahoo, Bhagyarathi Pradhan, Kshitish Kumar Sahu, Dushmanta Sahoo, Raghunath High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Theory Nuclear Experiment Nuclear Theory We study the effect of rotation and the consequent angular momentum fluctuations in a hadron resonance gas produced in ultra-relativistic heavy ion collisions. The rotational susceptibilities ($χ_{\rm ω}$, $χ^{2}_{\rm ω}$, etc.), which quantify how much the system responds to a small angular velocity, are estimated for the first time, considering that these can be valuable indicators of the QCD phase transition. The higher-order rotational susceptibilities and their ratios are estimated in the presence and absence of baryon chemical potential ($μ_{\rm B}$) in the system. The effect of particle spin ($s$) and rotational chemical potential ($ω$) on the fluctuation of the angular momentum is studied. To consider a more realistic scenario, the effect of interactions between hadrons is taken into account by considering van der Waals-like interactions, which include both attractive and repulsive interactions. A phase transition, absent in an ideal hadron gas model, can be observed in an interacting hadron gas model. |
| title | Rotational susceptibility of a hot and dense hadronic matter: A possible probe of QCD phase transition |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Theory Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2507.03708 |