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arXiv 0910.4319hep-th
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AdS/QCD有限温度下的甘精球

Glueballs at finite temperature from AdS/QCD

Alex S. Miranda, C. A. Ballon Bayona, Henrique Boschi-Filho, Nelson R. F. Braga

摘要:

受AdS/CFT对应的启发,近年来提出了各种全息唯象模型来描述强相互作用的非微扰方面。这些模型被命名为AdS/QCD。在这项工作中,我们回顾了使用AdS/QCD软壁模型研究有限温度下标量胶球的光谱。标量胶球态被确定为胶球算符的延迟关联函数的极点。在规范/引力对偶中,这些极点是由无质量标量场在体几何中传播的拟正规谱确定的,体几何由具有背景场的${AdS}_{5}$黑洞组成。我们讨论了等离子体相中标量胶球的质量和衰变宽度的一些结果,并分析了这些量如何随温度和动量而变化。

英文摘要:

Inspired in the AdS/CFT correspondence, a variety of holographic phenomenological models have been proposed in the last years to describe non-perturbative aspects of strong interactions. These models are denominated as AdS/QCD. In this work we review the use of the AdS/QCD soft-wall model to investigate the spectrum of scalar glueballs at finite temperature. The scalar glueball states are identified as the poles of the retarded correlation function of the glueball operator. In the gauge/gravity duality, these poles are determined by the quasinormal spectrum of a massless scalar field propagating in the bulk geometry that consists on an ${AdS}_{5}$ black hole with a background dilaton field. We discuss some results for masses and decay widths of scalar glueballs in the plasma phase and analyse how these quantities evolve with temperature and momentum.

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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