{"title":"Holographic Equation of State Matched with Hadron Gas Equation as a Tool for the Study of the Quark-Gluon Plasma Evolution","authors":"A. Anufriev, V. N. Kovalenko","doi":"10.1134/S1063779626701157","DOIUrl":null,"url":null,"abstract":"<p>In this paper, we discuss the matching of the holographic equation of state with the equation of Hadron Resonance Gas for studying the nuclear matter properties within the framework of relativistic heavy-ion collisions. Machine learning methods are applied to the calibration of free parameters of the model using the lattice QCD results for the physical values of quark masses. One of the most advanced procedures for matching is used with the function that approximates behavior of two models. Final hadronic spectra are obtained within multi-staged numerical approach of iEBE-MUSIC and SMASH-vHLLE packages. The code of relativistic hydrodynamics is modified by implementing a tabulated holographic equation of state, enabling simulations of quark-gluon plasma evolution with dynamically generated initial conditions via the 3D Monte Carlo Glauber Model and SMASH. Hybrid iSS and Hadron Sampler approaches are utilized at the freeze-out stage.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"57 5","pages":"957 - 962"},"PeriodicalIF":0.5000,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Particles and Nuclei","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063779626701157","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, PARTICLES & FIELDS","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we discuss the matching of the holographic equation of state with the equation of Hadron Resonance Gas for studying the nuclear matter properties within the framework of relativistic heavy-ion collisions. Machine learning methods are applied to the calibration of free parameters of the model using the lattice QCD results for the physical values of quark masses. One of the most advanced procedures for matching is used with the function that approximates behavior of two models. Final hadronic spectra are obtained within multi-staged numerical approach of iEBE-MUSIC and SMASH-vHLLE packages. The code of relativistic hydrodynamics is modified by implementing a tabulated holographic equation of state, enabling simulations of quark-gluon plasma evolution with dynamically generated initial conditions via the 3D Monte Carlo Glauber Model and SMASH. Hybrid iSS and Hadron Sampler approaches are utilized at the freeze-out stage.
本文讨论了在相对论性重离子碰撞框架下研究核物质性质的全息态方程与强子共振气体方程的匹配问题。利用点阵QCD结果对模型的自由参数进行了校正，得到了夸克质量的物理值。最先进的匹配过程之一是与近似两个模型的行为的函数一起使用。采用多级数值方法得到了iEBE-MUSIC和SMASH-vHLLE封装的最终强子谱。利用三维Monte Carlo Glauber模型和SMASH对相对论流体力学代码进行了修改，实现了一个列表全息状态方程，实现了在动态生成初始条件下夸克-胶子等离子体演化的模拟。在冻结阶段采用混合iSS和强子取样器方法。
期刊介绍：
The journal Fizika Elementarnykh Chastits i Atomnogo Yadr of the Joint Institute for Nuclear Research (JINR, Dubna) was founded by Academician N.N. Bogolyubov in August 1969. The Editors-in-chief of the journal were Academician N.N. Bogolyubov (1970–1992) and Academician A.M. Baldin (1992–2001). Its English translation, Physics of Particles and Nuclei, appears simultaneously with the original Russian-language edition. Published by leading physicists from the JINR member states, as well as by scientists from other countries, review articles in this journal examine problems of elementary particle physics, nuclear physics, condensed matter physics, experimental data processing, accelerators and related instrumentation ecology and radiology.
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