1. Some Questions, Comments and Discussions ZHUANG Pengfei, Tsinghua University QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009

2. 许怒：recent results from STAR at RHIC; 许长补：heavy flavor physics at RHIC; 马余刚：RHIC能区的集体流; 徐庆华：spin physics with STAR at RHIC 柯志明：particle production in heavy ion collisions; 王恩科：喷注淬火； 袁峰：spin structure of nucleon; 徐喆：thermalization of QGP 吴元芳：QCD临界点 CSR 王群：高密QCD相变 陈列文：重离子碰撞与核物质状态方程； 邹冰松：CSR强子物理； 王建松：CSR媒质效应； 徐瑚珊：CSR物理总结 QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009

3. Strongly Coupled Quark Matter ● lattice 2009: more non-perturbative when charm quark is thermalized, 50% contribution ! conclusion: non-perturbative QCD even at extremely high T ! ● two possible states of sQGP: a) independent quasi-partons b) partons + bound states QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009

4. QCD at High Density ● lattice 2009: searching for the QCD critical point in canonical ensemble T ● nB ● does the quarkyonic matter exist in real world with Nc=3 and what is the measurable consequence of the quarkyonic matter ? atom gas ● D.Son: no deconfinement in isospin matter due to pion superfluidity, even at extremely high isospin density QCD ● BCS-BEC crossover in QCD phase transitions at high density ● Fridel oscillation at high density QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009

5. 3 puzzles in HI (QM2009) 2)HBT Puzzle E=1 A GeV 1)DLS Puzzle low-mass dilepton enhancement, partial chiral restoration? A challenge for CSR! 3) J/Psi puzzle energy dependence and rapidity dependencecan well be explained by the competition between initial production and regeneration QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009

6. ●heavy quarks are produced only in the initial impact, and no extra production in the later evolutiona probe of early thermalization and a probe of QGP ●production via pQCD processrather solid ground Good QCD Probes 1) heavy flavor production 2) high pt production ● high pt particles are controlled by pQCD ● R_AA(Np) is not sensitive to dynamics ● momentum moments and R_AA(pt) are more sensitive to dynamics B.Mueller, nucl-th/0404015 3) probes sensitive not only to the new matter but also to the phase transition itself ! QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009

7. Exotic States in HI ● 反超核 at RHIC (and CSR) ● Production of the smallest QED atom: true muonium Brodsky and Lebed, PRL102, 213401(2009) Possible production in relativistic heavy ion collisions ? ● …… QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009

8. Quark MatterRubik’s Cube RHIC Lattice Compact Stars AdS/CFT Early Universe BCS-BEC QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009

9. 志谢 1）所有报告将尽快上网 2）第九次“QCD相变与相对论重离子物理”研讨会将于2009年8月在宜昌举行，组织者：宜昌三峡大学理学院院长冯笙琴教授 3）感谢高科技中心（CCAST），兰州所，和华中师大的大力支持 4）感谢所有与会朋友对研讨会的大力支持，感谢山东大学梁作堂教授，徐庆华教授对研讨会的精心组织，特别感谢张海英小姐对研讨会的热情服务！ 再见在宜昌！ QCD Phase Transitions & Heavy Ion Collisions, Weihai, August 9-14, 2009