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arXiv 0903.4747hep-th
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全息术对介子质量的屏蔽效应

Screening effects on meson masses from holography

Francesco Bigazzi, Aldo L. Cotrone, Angel Paredes, Alfonso V. Ramallo

摘要:

在Veneziano极限下研究了四维强耦合类SQCD理论中标量和矢量介子的能谱。规范理论描述了奇异变形锥上相交的D3和D 7-膜的低能动力学,它们的强耦合区可以通过对偶的完全反作用超引力背景来研究。我们所关注的介子是在这些背景下探测D 7-膜上世界体积规范场涨落的对偶。正如我们将详细评论的那样,在所研究的D3-D 7设置中,各种紫外线病理的普遍发生迫使我们将标准全息配方适应于具有内在截止值的理论。正如QED一样,类介子束缚态的低能谱将是一致的,并且在很大程度上与紫外截止无关。我们将详细研究这些光谱如何随基本海洋风味的数量及其质量而变化。

英文摘要:

We study the spectra of scalar and vector mesons in four dimensional strongly coupled SQCD-like theories in the Veneziano limit. The gauge theories describe the low energy dynamics of intersecting D3 and D7-branes on the singular and deformed conifold and their strong coupling regime can be explored by means of dual fully backreacted supergravity backgrounds. The mesons we focus on are dual to fluctuations of the worldvolume gauge field on a probe D7-brane in these backgrounds. As we will comment in detail, the general occurrence of various UV pathologies in the D3-D7 set-ups under study, forces us to adapt the standard holographic recipes to theories with intrinsic cutoffs. Just as for QED, the low energy spectra for mesonic-like bound states will be consistent and largely independent of the UV cutoffs. We will study in detail how these spectra vary with the number of the fundamental sea flavors and their 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。

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