Evolutionary intermittency and the QCD critical point

Evolutionary intermittency and the QCD critical point
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进化间歇性和 QCD 临界点

DOI:
10.1103/physrevc.78.024908
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发表时间:
2007
期刊:
影响因子:
3.1
通讯作者:
E. Saridakis
E. Saridakis
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
N. Antoniou;F. Diakonos;E. Saridakis

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我们研究了在重离子碰撞中形成的临界等标量凝聚物的动力学。我们的分析是基于一个简化的模型,其中\ensuremath{\sigma}和π介子是仅有的自由度。在物理和动量空间的场描述中,我们发现冻结剖面呈现出一种结构,揭示了\ensuremath{\sigma}分量中临界波动的清晰痕迹。在粒子表示中,使用蒙特卡罗模拟和阶乘矩分析,我们表明初始临界特征在检测到的介子中存在。我们提出了适当定义的间断性指数的分布,包括由\ \sigma}-介子相互作用引起的动力学效应,作为探索重离子碰撞实验中临界波动的基本观测值。
We investigate the dynamics of the critical isoscalar condensate, formed during heavy-ion collisions. Our analysis is based on a simplified model in which the \ensuremath{\sigma}'s and the pions are the only degrees of freedom. In field description, both in physical and momentum space, we find that the freeze-out profile presents a structure that reveals clear traces of the critical fluctuations in the \ensuremath{\sigma} component. In particle representation, using Monte Carlo simulations and factorial moment analysis, we show that signatures of the initial criticality survive at the detected pions. We propose the distribution of suitably defined intermittency indices, incorporating dynamical effects due to \ensuremath{\sigma}-pion interaction, as the basic observable for the exploration of critical fluctuations in heavy-ion collision experiments.
DOI: 10.2307/2532125
发表时间: 1990-03
期刊: --
影响因子: --
作者:
K. Falconer
通讯作者: K. Falconer