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相关论文: Collapse of Flow: Probing the Order of the Phase T…

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We numerically analyze recent high energy heavy-ion collision experiments based on a hydrodynamical model with phase transition and discuss a systematic change of initial state of QGP-fluid depending on colliding-nuclei's mass. In a…

核理论 · 物理学 2016-09-08 Shin Muroya , Hiroki Nakamura , Mikio Namiki

The contribution presents a brief summary of the Gauge/Gravity approach to the study of hydrodynamic flow of the quark-gluon plasma formed in heavy-ion collisions, in a boost-invariant setting (Bjorken flow). Considering the ideal case of a…

高能物理 - 唯象学 · 物理学 2014-11-20 R. A. Janik , Robi Peschanski

We investigate the excitation function of quark-gluon plasma formation and of directed in-plane flow of nucleons in the energy range of the BNL-AGS and for the E(Lab)=40AGeV Pb+Pb collisions performed recently at the CERN-SPS. We employ the…

核理论 · 物理学 2009-10-31 J. Brachmann , A. Dumitru , H. Stöcker , W. Greiner

The beam energy dependence of the elliptic flow,$v_2$, is studied in mid-central Au+Au collisions in the energy range of $3\leq \sqrt{s_{NN}} \leq 30$ GeV within the microscopic transport model JAM. The results of three different modes of…

In addition to signals for the critical point, evidence for a first order phase transition would indicate a nontrivial structure within the QCD phase diagram. Moreover, while not a direct measurement of the critical point, the presence of a…

核理论 · 物理学 2025-11-20 Jamie M. Karthein , Volker Koch , Claudia Ratti

The region of large net-baryon densities in the QCD phase diagram is expected to exhibit a first-order phase transition. Experimentally, its study will be one of the primaryobjectives for the upcoming FAIR accelerator. We model the…

高能物理 - 唯象学 · 物理学 2015-06-23 Christoph Herold , Marlene Nahrgang , Yupeng Yan , Chinorat Kobdaj

We discuss an outside-inside scenario for a first order quark-hadron transition in the Quark-Gluon Plasma (QGP) expected to be produced in heavy ion collisions, wherein the entire QGP region itself becomes like a subcritical bubble, and…

高能物理 - 唯象学 · 物理学 2009-10-30 Sanatan Digal , Ajit M. Srivastava

The sign change of the slope of the directed flow of baryons has been predicted as a signal for a first order phase transition within fluid dynamical calculations. Recently, the directed flow of identified particles has been measured by the…

核理论 · 物理学 2014-06-09 J. Steinheimer , J. Auvinen , H. Petersen , M. Bleicher , H. Stöcker

In this study, we report the predictions for the flow observables for different centrality classes in $O+O$ collisions. Our predictions utilize two different approaches, hydrodynamic and transport models, to analyze the behavior of the flow…

核理论 · 物理学 2025-07-23 Jagbir Singh , M. U. Ashraf , A. M. Khan , S. Kabana

Quantum Chromodynamics (QCD) is expected to have a first order phase transition between the confined hadron gas and the deconfined quark gluon plasma at high baryon densities. This will result in phase boundary effects in the metastable and…

高能物理 - 唯象学 · 物理学 2024-11-11 Joseph I. Kapusta , Mayank Singh , Thomas Welle

The collective motion of nucleons from high-energy heavy-ion collisions is analyzed within a relativistic two-fluid model for different equations of state (EoS). As function of beam energy the theoretical slope parameter F_y of the…

核理论 · 物理学 2014-11-18 Yu. B. Ivanov , E. G. Nikonov , W. Noerenberg , A. A. Shanenko , V. D. Toneev

The aim of this paper is to investigate the effect of a non-extensive form of statistical mechanics proposed by Tsallis on the formation of a quark-gluon plasma (QGP). We suggest to account for the effects of the dominant part of the…

高能物理 - 唯象学 · 物理学 2009-11-07 A. M. Teweldeberhan , H. G. Miller , R. Tegen

The longitudinal structure of the quark-gluon plasma(QGP) remains a key challenge in heavy-ion physics. In this Letter, we propose a novel observable, event-by-event mean transverse momentum fluctuations Var$_{\langle p_{T} \rangle}$, which…

核理论 · 物理学 2025-11-17 Lu-Meng Liu , Jinhui Chen , Xu-Guang Huang , Jiangyong Jia , Chun Shen , Chunjian Zhang

The observation of collective flow phenomena in small collision systems challenges our understanding of quark-gluon plasma (QGP) formation and evolution. This complexity lies in the initial geometries, which are influenced by both nucleon…

核实验 · 物理学 2025-10-23 STAR Collaboration

Relativistic heavy ion collisions have reached energies that enable the creation of a novel state of matter termed the quark-gluon plasma. Many observables point to a picture of the medium as rapidly equilibrating and expanding as a nearly…

核理论 · 物理学 2011-07-19 James L. Nagle , Ian G. Bearden , William A. Zajc

Anisotropic flow and radial flow are two key probes of the expansion dynamics and properties of the quark-gluon plasma (QGP). While anisotropic flow has been extensively studied, radial flow, which governs the system's radial expansion, has…

核实验 · 物理学 2026-01-28 ATLAS Collaboration

Recent theoretical explanations for how hydrodynamic-like flow can build up quickly in small collision systems (hydrodynamization) has led to a microscopic picture of flow building up in a gluon-dominated phase before chemical equilibrium…

高能物理 - 唯象学 · 物理学 2021-12-08 Sumit Basu , Peter Christiansen , Alice Ohlson , David Silvermyr

We study the properties of the strongly-coupled quark-gluon plasma with a multistage model of heavy ion collisions that combines the T$_\mathrm{R}$ENTo initial condition ansatz, free-streaming, viscous relativistic hydrodynamics, and a…

Recent advances in the study of equations of state of thermal lattice Quantum Chromodynamics obtained at non-zero baryon density allow validation of the quark-gluon plasma (QGP) liquid model equations of state (EoS). We study here the…

高能物理 - 唯象学 · 物理学 2009-11-10 J. Letessier , J. Rafelski

One of the key signatures of the Quark Gluon Plasma (QGP) is the energy loss of high momentum particles as they traverse the strongly interacting medium. The energy loss of these particles is governed by the jet transport coefficient…