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arXiv 1202.3244hep-th
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AdS/CFT谱问题的混合NLIE

Hybrid-NLIE for the AdS/CFT spectral problem

Janos Balog, Arpad Hegedus

摘要:

通过将AdS/CFT TBA方程的半无限SU(2)和SU(4)部分替换为几个适当选择的复NLIE变量,导出了AdS/CFT超西格玛模型及其伽玛形变的混合NLIE方程,它们之间相互耦合,并与TBA图剩余中心节点的Y函数相耦合.积分方程是明确地写为基态的伽玛变形系统。我们线性化这些NLIE方程,解析计算的第一个修正的渐近解,并找到协议与类似的结果来自原来的TBA形式主义。我们的方程有很大的不同,从最近发表的有限FiNLIE制定的频谱问题。

英文摘要:

Hybrid-NLIE equations, an alternative finite NLIE description for the spectral problem of the super sigma model of AdS/CFT and its gamma-deformations are derived by replacing the semi-infinite SU(2) and SU(4) parts of the AdS/CFT TBA equations by a few appropriately chosen complex NLIE variables, which are coupled among themselves and to the Y-functions associated to the remaining central nodes of the TBA diagram. The integral equations are written explicitly for the ground state of the gamma-deformed system. We linearize these NLIE equations, analytically calculate the first correction to the asymptotic solution and find agreement with analogous results coming from the original TBA formalism. Our equations differ substantially from the recently published finite FiNLIE formulation of the spectral problem.

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