arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1201.3471hep-thgr-qc
收藏

AdS和dS中回路贡献的比较研究

Comparative study of loop contributions in AdS and dS

E. T. Akhmedov, A. V. Sadofyev

摘要:

德西特空间庞加莱曲面中非共形场的普遍特征是即使对于大质量场也存在大的红外环修正。此外,在整体de Sitter中,对于大质量场,存在圈IR发散。从德西特到反德西特的朴素分析延拓可能会导致人们得出这样的结论:在后一个空间中也应该发生类似的事情。然而,我们表明,有没有大的IR效应在一圈两点函数在Poincare补丁的Anti-de-Sitter空间,即使是零质量的最小耦合标量场。在整体Anti-de-Sitter空间中,即使对于零质量,也没有大的IR效应和IR发散。

英文摘要:

The generic feature of non-conformal fields in Poincare patch of de Sitter space is the presence of large IR loop corrections even for massive fields. Moreover, in global de Sitter there are loop IR divergences for the massive fields. Naive analytic continuation from de Sitter to Anti-de-Sitter might lead one to conclude that something similar should happen in the latter space as well. However, we show that there are no large IR effects in the one-loop two-point functions in the Poincare patch of Anti-de-Sitter space even for the zero mass minimally coupled scalar fields. As well there are neither large IR effects nor IR divergences in global Anti-de-Sitter space even for the zero mass.

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。

↑