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arXiv 1009.4428hep-thhep-phnucl-th
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带物质的改进的AdS/QCD模型

Improved AdS/QCD Model with Matter

Alexander Stoffers, Ismail Zahed

摘要:

在有限温度和有限化学势下研究了改进的AdS/QCD模型。边界理论的β函数的一个Ancillary允许推导出一个带电的电子黑洞的散装。该溶液在紫外光下渐近RN-AdS,在红外光下渐近AdS ~(2 *)R ~ 3,并讨论了该溶液的化学性质。在渐近温度下,尽管边界处的规范耦合具有渐近自由的性质,但费米子耦合系数仍偏离自由费米子极限。讨论了波里雅科夫线、弦的时空张力对温度和化学势的依赖关系。

英文摘要:

We study an improved AdS/QCD model at finite temperature and chemical potential. An Ansatz for the beta-function for the boundary theory allows for the derivation of a charged dilatonic black hole in bulk. The solution is asymptotically RN-AdS in the UV and AdS2 * R3 in the IR. We discuss the thermodynamical aspects of the solution. The fermionic susceptibilities are shown to deviate from the free fermionic limits at asymptotic temperatures despite the asymptotically free nature of the gauge coupling at the boundary. The Polyakov line, the temporal and spatial string tensions dependence on both temperature and chemical potential are also discussed.

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