On string tensions in supersymmetric gauge theory

On string tensions in supersymmetric gauge theory
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超对称规范理论中的弦张力

DOI:
10.1016/s0370-2693(02)01155-3
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发表时间:
2001
期刊:
影响因子:
4.4
通讯作者:
I. Klebanov
I. Klebanov
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
C. Herzog;I. Klebanov

文献摘要

被引文献

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在N =1超对称SU(M)规范动力学的某些模型中(Nucl. Phys. B 447(1995)271和Nucl. Phys. B 513(1998)87),终止于q个外夸克的弦的张力与sin(πq/M)成正比,q= 1,.,M −1。在这封信中,我们使用最近推导出的N =1 SUSY规范理论的IIB型重力对偶来计算q弦张力的比率。在远红外区,这些引力波包含一个具有M个单位的R-R 3-形式通量的S 3,在S-对偶性下,它变成NS-NS 3-形式通量。封闭的q弦是用一个D3-膜包裹一个S2 <$S3,用q个世界体积通量单位来描述的。对于其中一个引力对偶背景(Maldacena-Nuñez),D3-膜探测计算精确地再现了sin(πq/M)依赖性,而对于另一个(Klebanov-Strassler),我们发现近似一致。我们推测了SU(2)WZW模型中q弦张力与D膜张力之间的联系。
In some models of N =1 supersymmetric SU(M) gauge dynamics (Nucl. Phys. B 447 (1995) 271 and Nucl. Phys. B 513 (1998) 87), the tension of a string ending on q external quarks is proportional to sin(πq/M), q=1,…,M−1. In this Letter we calculate the ratios of the q-string tensions using the recently derived type IIB gravity duals of N =1 SUSY gauge theories. Far in the IR these gravity duals contain an S3with M units of R–R 3-form flux which, upon S-duality, turns into NS–NS 3-form flux. The confining q-string is described by a D3-brane wrapping an S2⊂ S3with q units of world volume flux. For one of the gravity dual backgrounds (Maldacena–Nuñez) a D3-brane probe calculation exactly reproduces the sin(πq/M) dependence, while for another (Klebanov–Strassler) we find approximate agreement. We speculate on the connection of the q-string tensions with D-brane tensions in the SU(2) WZW model.