AdS/QCD phenomenological models from a back-reacted geometry
AdS/QCD phenomenological models from a back-reacted geometry
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DOI：
10.1088/1126-6708/2007/03/064
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发表时间：
2006-11
影响因子：
5.4
通讯作者：
J. Shock;Feng Wu;Yue-Liang Wu;Zhi-Feng Xie
中科院分区：
文献类型：
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作者：
J. Shock;Feng Wu;Yue-Liang Wu;Zhi-Feng Xie
我们构造了一个显示手征对称性破缺的四维场论的全后向反应全息对偶。通过研究对偶于QQ算符的五维场的影响，考虑了两种可能的模型。一个模型在所有半径处具有平滑几何图形，而另一个模型在有限半径处动态生成截止点。这两个模型都满足爱因斯坦的场方程式。第二个模型只有三个自由参数，就像在QCD中一样，我们证明这给出了唯象上一致的结果。我们还讨论了为了从反向反应模型获得线性约束的可能性，可能需要考虑二维算符的凝聚。
We construct a fully back-reacted holographic dual of a four-dimensional field theory which exhibits chiral symmetry breaking. Two possible models are considered by studying the effects of a five-dimensional field, dual to the qq operator. One model has smooth geometry at all radii and the other dynamically generates a cutoff at finite radius. Both of these models satisfy Einstein's field equations. The second model has only three free parameters, as in QCD, and we show that this gives phenomenologically consistent results. We also discuss the possibility that in order to obtain linear confinement from a back-reacted model it may be necessary to consider the condensate of a dimension two operator.