arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 0911.0627hep-ph
收藏

AdS/QCD的唯象及其引力对偶

Phenomenology of AdS/QCD and Its Gravity Dual

B. Galow, E. Megias, J. Nian, H. J. Pirner

摘要:

在AdS/QCD的引力对偶理论中,我们构造了Refs的弯曲因子的量子势。{1,2}。利用这个AdS_5度规的性质类似于QCD,我们发现,引力对偶导致一个有意义的规范耦合之间的区域charmonium和bottonium质量,但略有不同,QCD在极端紫外。当我们把紫外行为固定在与β函数一致的位置时,我们可以得到与总的重夸克-反夸克势很好的一致性。虽然与-α^{4/3}/r成比例的首阶不同于微扰QCD,但在NNLO中,全势与短程QCD势相当一致。

英文摘要:

We construct the dilaton potential in the gravity dual theory of AdS/QCD for the warp factor of Refs.{1,2}. Using this AdS_5-metric with properties similar to QCD, we find that the gravity dual leads to a meaningful gauge coupling in the region between the charmonium and bottonium mass, but differs slightly from QCD in the extreme UV. When we fix the ultraviolet behavior in accord with the beta-function, we can obtain good agreement with the overall heavy quark-antiquark potential. Although the leading order proportional to -α^{4/3}/r differs from perturbative QCD, the full potential agrees quite well with the short distance QCD potential in NNLO.

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。

↑