Factorial cumulants of proton multiplicity near a critical point using maximum entropy freeze-out prescription
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911195563294720 |
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| author | Karthein, Jamie Pradeep, Maneesha Rajagopal, Krishna Stephanov, Mikhail Yin, Yi |
| author_facet | Karthein, Jamie Pradeep, Maneesha Rajagopal, Krishna Stephanov, Mikhail Yin, Yi |
| contents | We present the first application of the maximum-entropy freeze-out prescription to calculate factorial cumulants of proton multiplicities near the conjectured QCD critical point in thermal equilibrium. We map the Gibbs free energy of the 3D Ising model to a parameterized class of possible EoS near QCD critical point. This equilibrium baseline highlights how factorial cumulants isolate critical fluctuations by subtracting trivial self-correlations, setting the stage for future out-of-equilibrium analyses. We identify the key non-universal aspects of the mapping to the Ising model that strongly control the characteristic properties, such as magnitude and location of the peaks of the factorial cumulants along the freeze-out curve. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_05567 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Factorial cumulants of proton multiplicity near a critical point using maximum entropy freeze-out prescription Karthein, Jamie Pradeep, Maneesha Rajagopal, Krishna Stephanov, Mikhail Yin, Yi Nuclear Theory We present the first application of the maximum-entropy freeze-out prescription to calculate factorial cumulants of proton multiplicities near the conjectured QCD critical point in thermal equilibrium. We map the Gibbs free energy of the 3D Ising model to a parameterized class of possible EoS near QCD critical point. This equilibrium baseline highlights how factorial cumulants isolate critical fluctuations by subtracting trivial self-correlations, setting the stage for future out-of-equilibrium analyses. We identify the key non-universal aspects of the mapping to the Ising model that strongly control the characteristic properties, such as magnitude and location of the peaks of the factorial cumulants along the freeze-out curve. |
| title | Factorial cumulants of proton multiplicity near a critical point using maximum entropy freeze-out prescription |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2510.05567 |