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arXiv 0903.4818hep-ph
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从全息术研究核子电磁和引力形状因子

Nucleon electromagnetic and gravitational form factors from holography

Zainul Abidin, Carl E. Carlson

摘要:

在AdS/QCD模型下,考虑了5维AdS空间中Dirac场与矢量场的耦合,计算了核子的电磁形状因子.我们还计算了引力或能量动量形状因子的扰动度规从静态AdS解决方案。我们考虑了硬壁模型和软壁模型,硬壁模型中的AdS几何形状在z_0处截止,而软壁模型中的几何形状被背景场平滑地截止。

英文摘要:

The electromagnetic form factors of nucleons are calculated using an AdS/QCD model by considering a Dirac field coupled to a vector field in the 5-dimensional AdS space. We also calculate a gravitational or energy-momentum form factor by perturbing the metric from the static AdS solution. We consider both the hard-wall model where the AdS geometry is cutoff at z_0 and the soft-wall model where the geometry is smoothly cut off by a background dilaton field.

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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