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arXiv 1010.4231nucl-thhep-lathep-phnucl-ex
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夸克谱密度与强耦合QGP

Quark spectral density and a strongly-coupled QGP

Si-xue Qin, Lei Chang, Yu-xin Liu, Craig D. Roberts

摘要:

在温度高于恢复手征对称性的温度下,用最大熵方法从QCD能隙方程的彩虹截断的自洽数值解中计算缀饰夸克谱密度.除了正常模和纤溶酶模外,谱函数在1.4-1.8倍的临界温度T_c范围内还表现出基本上无微扰的零模。在T_c附近,这种长波模包含了大部分的光谱强度,只要这种模存在,系统就可以被描述为强耦合的物质态。

英文摘要:

The maximum entropy method is used to compute the dressed-quark spectral density from the self-consistent numerical solution of a rainbow truncation of QCD's gap equation at temperatures above that for which chiral symmetry is restored. In addition to the normal and plasmino modes, the spectral function also exhibits an essentially nonperturbative zero mode for temperatures extending to 1.4-1.8-times the critical temperature, T_c. In the neighbourhood of T_c, this long-wavelength mode contains the bulk of the spectral strength and so long as this mode persists, the system may fairly be described as a strongly-coupled state of matter.

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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