Holographic Model for Mesons at Finite Temperature (熱場の量子論とその応用)
Holographic Model for Mesons at Finite Temperature (熱場の量子論とその応用)
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DOI：
10.1103/physrevd.73.125010
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发表时间：
2005-12
期刊：
影响因子：
--
通讯作者：
K. Ghoroku;M. Yahiro
中科院分区：
文献类型：
--
作者：
K. Ghoroku;M. Yahiro
本文提出了一个有限温度下的QCD全息模型，并利用这个模型研究了轻介子的热性质。我们发现了几种介子的质量和衰变常数与温度的有趣关系，并在有限温度下保证了手征对称性破缺的Nambu-Goldstone定理和广义Gell-Mann-Oakes-Renner关系.在手征极限下，π介子在热介质中的速度随温度的升高而减小，直到夸克禁闭-解除禁闭转变的临界温度。
A holographic model of QCD at finite temperature is proposed and thermal properties for light mesons are examined in terms of this model. We find interesting temperature dependences of masses and decay constants for several mesons, and the Nambu-Goldstone theorem for the chiral symmetry breaking and the generalized Gell-Mann-Oakes-Renner relation are assured at finite temperature. In the chiral limit, the speed of a pion in the thermal medium is found to decrease as temperature increases to the critical temperature of quark confinement-deconfinement transition.