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RHIC 上的观测是否预示了 QCD 临界点?

核实验 2008-11-26 v5

作者: Roy A. Lacey , N. N. Ajitanand , J. M. Alexander , P. Chung , W. G. Holzmann , M. Issah , A. Taranenko , P. Danielewicz , Horst Stocker

在 arXiv 上查看 ↗ PDF ↗ DOI ↗

摘要

估计了 RHIC(√s_{NN}=200 GeV)的 Au+Au 碰撞中产生的热稠密 QCD 物质的剪切黏度与熵之比(η/s)。发现其值非常低,η/s ∼ 0.1,接近猜想的下界(1/4π)。我们认为如此低的值表明衰减物质的热力学轨迹接近于 QCD 临界端点。

关键词

QCD 临界点剪切黏度与熵之比 Au+Au 碰撞 RHIC QCD 物质热力学轨迹

引用

@article{arxiv.nucl-ex/0609025,
  title  = {Has the QCD Critical Point been Signaled by Observations at RHIC ?},
  author = {Roy A. Lacey and N. N. Ajitanand and J. M. Alexander and P. Chung and W. G. Holzmann and M. Issah and A. Taranenko and P. Danielewicz and Horst Stocker},
  journal= {arXiv preprint arXiv:nucl-ex/0609025},
  year   = {2008}
}

备注

4 pages, 3 figures. Revised version, accepted for publication in PRL