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arXiv 1209.0883hep-thhep-lathep-ph
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规范/引力对偶中的重夸克势:大维分析

Heavy Quark Potential from Gauge/Gravity Duality: A Large D Analysis

Vikram Vyas

摘要:

重夸克势是在规范/引力对偶的框架下使用大D近似计算的,其中D是在平坦的D+2维时空中连接夸克和反夸克的通量管的横向维数。我们发现,在大D限制的基态能量的领先的修正,作为一个有效的南武-后藤弦,产生的不是重模式,但从附近的夸克和反夸克的无质量模式的行为。我们估计了这种修正,发现它在不久的将来重夸克势的格点量子色动力学计算中应该是可见的。

英文摘要:

The heavy-quark potential is calculated in the framework of gauge/gravity duality using the large-D approximation, where D is the number of dimensions transverse to the flux tube connecting a quark and an antiquark in a flat D+2-dimensional spacetime. We find that in the large-D limit the leading correction to the ground-state energy, as given by an effective Nambu-Goto string, arises not from the heavy modes but from the behavior of the massless modes in the vicinity of the quark and the antiquark. We estimate this correction and find that it should be visible in the near-future lattice QCD calculations of the heavy-quark potential.

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