标题： 从小波视角看错向手征凝聚的域结构 显示英文标题

标题： Domain Structure of a Disoriented Chiral Condensate From a Wavelet Perspective

摘要： 我们提出了一种新方法，利用离散小波变换研究高能强子和重离子碰撞中无序手征凝聚态（DCC）的形成。 由于其空间尺度局部性的显著特点，离散小波在同时探测相空间不同位置和不同尺度的物理现象方面非常有效。 我们表明，在DCC情况下，不同快速度区间大小的中性π介子分数的概率分布具有独特的形状，并且在接近中央极限定理所需的高斯分布时表现出延迟。 我们发现DCC的小波功率谱对尺度有很强的依赖性，而平衡系统和诸如HIJING的标准动力学模型则具有平坦的谱。 显示英文摘要

摘要： We present a novel method for studying the formation of a disoriented chiral condensate (DCC) in high-energy hadronic and heavy-ion collisions utilizing a discrete wavelet transformation. Due to its salient feature of space-scale locality, the discrete wavelet proves to be very effective in probing physics simultaneously at different locations in phase space and at different scales. We show that the probability distributions of the neutral pion fraction for various rapidity-bin sizes have distinctive shapes in the case of a DCC and exhibit a delay in approaching the Gaussian distribution required by the Central Limit Theorem. We find the wavelet power spectrum for a DCC to exhibit a strong dependence on the scale while an equilibrium system and the standard dynamical models such as HIJING have a flat spectrum.