用SMASH输运方法计算核物质在({\varvec{E_\textrm{kin}/A=0.25}}\)-1.5 GeV的流动和状态方程

IF 2.6 3区物理与天体物理 Q2 PHYSICS, NUCLEAR The European Physical Journal A Pub Date : 2024-11-27 DOI:10.1140/epja/s10050-024-01445-w

L. A. Tarasovičová, J. Mohs, A. Andronic, H. Elfner, K.-H. Kampert

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引用次数: 0

摘要

我们将 FOPI 合作项目在每核子 0.25 至 1.5 GeV 的束动能条件下进行的金-金、氙-氙和镍-镍对撞中的定向和椭圆流数据与 SMASH 强子输运模型的模拟结果进行了比较。状态方程的参数是核密度的函数，SMASH 中新引入了与动量相关的势。通过统计分析，我们发现在 SMASH 输运模型的现状下，较低能量下的集合流数据与软动量相关势能最为吻合，而较高能量下的椭圆流则需要较硬的动量相关状态方程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Flow and equation of state of nuclear matter at \({\varvec{E_\textrm{kin}/A=0.25}}\)–1.5 GeV with the SMASH transport approach

We present a comparison of directed and elliptic flow data by the FOPI collaboration in Au–Au, Xe–CsI, and Ni–Ni collisions at beam kinetic energies from 0.25 to 1.5 GeV per nucleon to simulations using the SMASH hadronic transport model. The Equation of State is parameterized as a function of nuclear density and momentum dependent potentials are newly introduced in SMASH. With a statistical analysis, we show that within the present status of the SMASH transport model, the collective flow data at lower energies is in the best agreement with a soft momentum dependent potential, while the elliptic flow at higher energies requires a harder momentum dependent equation of state.

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来源期刊

The European Physical Journal A 物理-物理：核物理

CiteScore

5.00

自引率

18.50%

发文量

216

审稿时长

3-8 weeks

期刊介绍： Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.