arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1012.5215hep-lat
收藏

QCD热力学的最新结果:格点量子色动力学与强子共振气体模型

Recent results on QCD thermodynamics: lattice QCD versus Hadron Resonance Gas model

Szabolcs Borsanyi, Zoltan Fodor, Christian Hoelbling, Sandor D. Katz, Stefan Krieg, Claudia Ratti, Kalman K. Szabo

摘要:

我们提出了我们最新的研究QCD交叉转变温度与2+1交错的味道和一个链接的stout改进[JHEP 1009:073,2010]。我们扩展我们的前两个研究[物理。B643(2006)46,JHEP 0906:088(2009)]通过选择更精细的晶格($N_t$ =16),我们再次使用物理夸克质量进行工作。所有这些结果都与强子共振气体模型和手征微扰理论对低于过渡区温度的预言相矛盾。在这些解析计算中,我们的结果可以通过使用物理谱来再现。与hotQCD合作的结果进行了比较。

英文摘要:

We present our most recent investigations on the QCD cross-over transition temperatures with 2+1 staggered flavours and one-link stout improvement [JHEP 1009:073, 2010]. We extend our previous two studies [Phys. Lett. B643 (2006) 46, JHEP 0906:088 (2009)] by choosing even finer lattices ($N_t$=16) and we work again with physical quark masses. All these results are confronted with the predictions of the Hadron Resonance Gas model and Chiral Perturbation Theory for temperatures below the transition region. Our results can be reproduced by using the physical spectrum in these analytic calculations. A comparison with the results of the hotQCD collaboration is also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑