标题： 强子结构与QCD相变 显示英文标题

标题： Hadron Structure and the QCD Phase Transition

摘要： 首先，我简要总结了目前对QCD在$T_c$以下和附近的理解（手征转变的临界温度）。重点强调了Yukawa区（$T \sim 0)$）与Hagedorn区（$T \sim T_c$）之间的定性差异。 其次，从QCD谱矩求和规则的角度，回顾了与手征转变相关的动力学现象，特别是热和/或密集介质中强子的谱变化。还澄清了有限温度/密度下QCD求和规则的混淆之处，并对有效拉格朗日方法进行了评论。 第三，总结了计划用于检测介质中谱变化的实验。 显示英文摘要

摘要： Firstly, I give a brief summary of the current understanding of QCD below and near $T_c$ (the critical temperature of the chiral transition). Some emphases are put on the qualitative difference between the Yukawa regime ($T \sim 0)$ and the Hagedorn regime ($T \sim T_c$). Secondly, the dynamical phenomena associated with the chiral transition, in particular, the spectral changes of hadrons in hot and/or dense medium are reviewed from the point of view of the QCD spectral sum rules. Confusions on the QCD sum rules at finite temperature/density are also clarified and remarks on the effective lagrangian approaches are given. Thirdly, planned experiments to detect the spectral changes in medium are summarized.