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arXiv 0907.0333hep-th
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多维非对易Yang-Mills理论热等离子体中的全息和拖曳力

Holography and drag force in thermal plasma of non-commutative Yang-Mills theories in diverse dimensions

Shibaji Roy

摘要:

本文利用全息术和弦探针方法计算了夸克在非对易杨-米尔斯(NCYM)理论的热等离子体中运动时所受的不同维度的拖曳力。这些情况下的重力背景由非极值(D $(p-2)$,D $p$)膜束缚态系统的一个特定的退耦极限来描述.我们展示了如何在双NCYM理论的外部夸克移动的阻力得到纠正,由于非交换性,因此有效粘度的等离子体得到减少。我们得到了小非对易性和大非对易性的曳力。这是已知的早期(3+1)维NCYM理论,然而,我们发现,一般情况下的校正通常取决于NCYM理论的维数,表明阻力的结构是非普适的。

英文摘要:

We use holography and a string probe approach to compute the drag force on a quark moving in a thermal plasma of non-commutative Yang-Mills (NCYM) theories in various dimensions. The gravity background in these cases are described by a particular decoupling limit of non-extremal (D$(p-2)$, D$p$) brane bound state system. We show how the drag force on an external quark moving in the dual NCYM theories gets corrected due to non-commutativity and as a result the effective viscosity of the plasma gets reduced. We have obtained the drag force for both small and large non-commutativity. This was known earlier for (3+1)-dimensional NCYM theory, however, we find that the corrections for the general case typically depend on the dimensionality of the NCYM theories, indicating that the structure of the drag force is non-universal.

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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