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10篇 您的检索式:作者名="Che Ming Ko"
    题名 作者 年代 出处 被引量
1Recent progress and new challenges in isospin physics with heavy-ion reactions显示文摘Bao-An Li Lie-Wen Chen Che Ming Ko 2008Physics Reports2008,,4:4
2相对论重离子碰撞中正反粒子椭圆流的劈裂显示文摘相对论重离子碰撞是研究极端高温高密条件下新物质形态及量子色动力学相图的重要实验手段,而椭圆流是相对论重离子碰撞的重要实验观测量.近年来在美国布鲁克海文国家实验室的相对论重离子对撞机上进行束流能量扫描实验,研究人员发现了一些异于极端相对论重离子碰撞的行为,比如正反粒子椭圆流的劈裂.基于拓展的多相输运模型,可以通过正反粒子的不同平均场势来解释该实验现象,并可据此提取高重子及同位旋化学势下夸克物质的状态方程及相图信息.徐骏 刘鹤 Che Ming Ko 2020科学通报2020,65,9:3
3重离子碰撞中的轻核产生和QCD相变显示文摘寻找量子色动力学(Quantum Chromodynamics,QCD)相变信号是当前重离子碰撞实验的一个基础科学目标,对理解强相互作用物质的性质、大爆炸初期的宇宙演化、超新星的爆发机制、致密星的内部结构以及双中子星并合产生的引力波等重要前沿问题都具有重要意义。当重离子碰撞中发生非连续QCD相变时,引发的强相互作用物质的密度涨落与关联可以通过轻原子核的产额观察量来探测。核子间的多体关联决定了重离子碰撞中轻核的产额。特别地,基于核子并合模型对于轻核产额的计算表明质子(p)、氘核(d)和氚核(t)的产额比值N_(t)N_(p)/Nd_(2)敏感于核子密度涨落与关联,是一个较好的寻找QCD相变信号的可观测量。进一步,基于输运模型对于重离子碰撞中的手征相变的模拟发现,当系统的相轨迹经过一阶相变区域时,轻核产额比值N_(t)N_(p)/Nd_(2)有明显增加。这些结果为利用重离子碰撞中的轻核产生寻找QCD相变提供了理论依据。孙开佳 陈列文 Ko Che Ming 李峰 徐骏 许长补 2023核技术2023,46,4:2
4Yield ratio of hypertriton to light nuclei in heavy-ion collisions from √sNN=4.9 GeV to 2.76 TeV显示文摘We argue that the difference in the yield ratio S3=NΛ3H/NΛ/N3He/Np measured in Au+Au collisions at √sNN=200 GeV and in Pb-Pb collisions at √sNN=2.76 TeV is mainly owing to the different treatment of the weak decay contribution to the proton yield in the Au+Au collisions at √sNN=200 GeV.We then use the coalescence model to extract from measured S3 the information about the Λ and nucleon density fluctuations at the kinetic freeze-out of heavy-ion collisions.We also show,using available experimental data,that the yield ratio S2=NΛ3H/NΛNd is a more promising observable than S3 for probing the local baryon-strangeness correlation in the produced medium.邵天浩 陈金辉 Che Ming Ko 孙开佳 许长补 2020Chinese Physics C2020,44,11:2
5Probing the nuclear symmetry energy with heavy-ion reactions induced by neutron-rich nuclei显示文摘Lie-wen Chen Che Ming Ko Bao-an Li Gao-chan Yong 2007Frontiers of Physics in China2007,,3:2
6Recent progress and new challenges in isospin physics with heavy-ion reactions显示文摘Bao-An Li Lie-Wen Chen Che Ming Ko 2008Physics Reports2008,,4:1
7Searching for QCD critical point with light nuclei显示文摘Density fluctuations and correlations due to a first-order quark-gluon plasma to hadronic matter phase transition and its critical end point,if they remain present after the hadronic evolution in a heavy ion collisions,can lead to an enhanced production of light nuclei in these collisions.This would then result in a non-monotonic collision energy dependence of the yield ratio NtNp∕Nd2of proton number Np,deuteron number Nd,and triton number Nt.Measurements of this yield ratio as a function of collision energy thus provides the possibility to probe the equation of state of strong-interaction matter and its phase diagram.Che Ming Ko 2023Nuclear Science and Techniques2023,34,5:1
8Spin Polarizations in a Covariant Angular Momentum Conserved Chiral Transport Model显示文摘To achieve total angular momentum conservation is highly nontrivial in constructing transport models when the spin-orbit interactions are not negligible.In our recent works[1,2],we have developed the first transport model that rigorously respects this fundamental conservation law by carefully including the side-jump effect[3,4]caused by spin-orbit interactions.Liu Shuai Y.F. Sun Yifeng Che Ming Ko 2019IMP & HIRFL Annual Report2019,,1:0
9A Dynamical Quark Coalescence Approach to φ and Ω Anisotropic Flows and Their Scaling in Heavy-Ion Collisions at RHIC显示文摘We report the results on anisotropic flows and their scaling forφmesons andΩ(Ω^-+■^+)baryons in Au+Au collisions at RHIC,obtained from a dynamical quark coalescence model that uses the quark phase- space information from a multi-phase transport(AMPT)model within the string melting scenario and includes the quark structure of hadrons.陈列文 Che Ming Ko 2007高能物理与核物理2007,31,12:0
10Density fluctuations in baryon-rich quark matter显示文摘At finite baryon chemical potential,the density of a quark matter develops large fluctuations when it undergoes a first-order phase transition.Based on the transport equation derived from the Nambu–Jona-Lasinio(NJL) model,we have studied the density fluctuations in a baryon-rich quark matter that is confined in a finite volume.Allowing the expansion of the quark matter using initial conditions from either a blast wave model or a multiphase transport(AMPT) model,we have further studied the survivability of the density fluctuations as the density and temperature of the quark matter decrease.Possible experimental signatures of the density fluctuations are suggested.Che Ming Ko Feng Li 2016Nuclear Science and Techniques2016,27,6:0
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