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arXiv 1802.06755hep-ph
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彩色玻璃冷凝形式主义、Balitsky-JIMWLK的演变和Lipatov的高能效action

The Color Glass Condensate formalism, Balitsky-JIMWLK evolution and Lipatov's high energy effective action

Martin Hentschinski

摘要:

我们研究了Lipatov的高能有效作用量是否能够在高能因式分解中再现夸克和胶子传播子,从而恢复与强背景场的相互作用。这样的传播子经常在彩色玻璃凝聚体形式主义的计算中使用,特别是当考虑稀释射弹在致密靶核或核子上的散射时。我们发现,这样的传播子可以从高能量有效作用量,如果使用一个特殊的参数化的胶子场,首先提出的Lipatov在原来的出版物的高能量有效作用量。利用所得到的传播子,从高能有效作用量重导出了协变规范下的首阶Balitsky-JIMWLK演化方程。另外,我们的结果证实了文献中提出的正则化胶子定义为伴随威尔逊线的对数。

英文摘要:

We investigate the question whether Lipatov's high energy effective action is capable to reproduce quark and gluon propagators which resum interaction with a strong background field within high energy factorization. Such propagators are frequently employed in calculations within the Color Glass Condensate formalism, in particular when considering scattering of a dilute projectile on a dense target nucleus or nucleon. We find that such propagators can be obtained from the high energy effective action, if a special parametrization of the gluonic field is used, first proposed by Lipatov in the original publication on the high energy effective action. The obtained propagators are used to rederive from the high energy effective action the leading order Balitsky-JIMWLK evolution equation in covariant gauge. As an aside, our result confirms the definition of the reggeized gluon as the logarithm of an adjoint Wilson lines, proposed in the literature.

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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