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arXiv 0705.0496hep-th
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全息QCD中的瞬子

On Instantons in Holographic QCD

Ali Imaanpur

摘要:

我们在作为QCD全息描述的$N_c$ D4-膜的背景下研究了探测D8-膜有效作用的瞬子和孤子。我们表明,4D瞬子坐在最低的欧几里德5D行动。限制到五维模型的静态孤子,我们被引导到考虑在一个3维弯曲空间中的单极子。由于背景度量仅依赖于第五坐标,因此可以将非线性方程简化为平坦空间中的方程,并写出显式解。

英文摘要:

We examine instantons and solitons of the effective action of probe D8-branes in the background of $N_c$ D4-branes which has served as a holographic description of QCD. We show that the 4d instantons sit at the minimum of the Euclidean 5d action. Restricting to the static solitons of the five-dimensional model we are led to consider monopoles in a 3-dimensional curved space. Since the background metric depends only on the fifth coordinate, it is possible to reduce the monopole equations to the ones in flat space and write down the explicit solutions.

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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