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arXiv 1011.0695hep-lathep-phnucl-th
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粲偶素关联和有限温度下的光谱函数

Charmonium correlation and spectral functions at finite temperature

H. -T. Ding, A. Francis, O. Kaczmarek, F. Karsch, H. Satz, W. Soeldner

摘要:

研究了各向同性晶格上猝灭QCD中粲偶素态在有限温度下的性质。我们测量了粲偶素的非微扰$\cO(a)$改进三叶草费米子精细($a=0.01$ fm)晶格与一个相对较大的尺寸的$128^{3}\times 96$,$128^3\times48$,$128^3\times32$和$128^3\times24$在$0.73~T_c$,$1.46~T_c$,$2.20~T_c$和$2.93~T_c$,分别。我们的分析表明,$\Jpsi$在$1.46~T_c$时已经熔化,而$η_c$在$1.46~T_c$时开始溶解,并且在更高的温度下不存在。我们还首次在谱函数水平上确定了重夸克输运的贡献。

英文摘要:

We study the properties of charmonium states at finite temperature in quenched QCD on isotropic lattices. We measured charmonium correlators using non-perturbatively $\cO(a)$ improved clover fermions on fine ($a=0.01$ fm) lattices with a relatively large size of $128^{3}\times 96$, $128^3\times48$, $128^3\times32$ and $128^3\times24$ at $0.73~T_c$, $1.46~T_c$, $2.20~T_c$ and $2.93~T_c$, respectively. Our analysis suggests that $\Jpsi$ is melted already at $1.46~T_c$ and $η_c$ starts to dissolve at $1.46~T_c$ and does not exist at higher temperatures. We also identify the heavy quark transport contribution at the spectral function level for the first time.

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。

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