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arXiv 1102.5716hep-th
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与西格玛模型有关的一族量子场论的可积性

Integrability of a family of quantum field theories related to sigma models

D. Ridout, J. Teschner

摘要:

介绍了一种构造大类可积量子场论格点离散化的方法。该方法分两步进行:从光锥表示中的相互作用项的代数确定模型可积性的量子代数结构。相关的量子代数的表示理论,然后被用来构建量子逆散射方法的基本成分,晶格Lax矩阵和R-矩阵。这个方法用四个例子来说明:Sinh-Gordon模型,仿射sl(3)Toda模型,一个叫做费米子sl(2)的模型|1)Toda理论和N=2超对称Sine-Gordon模型。这些模型都以不同的方式与西格玛模型相关。N=2的超对称Sine-Gordon模型,特别是描述了弦论在AdS_2 x S^2上的Pohlmeyer约化,并且是一个具有香肠形目标空间的超对称非线性西格玛模型的对偶。

英文摘要:

A method is introduced for constructing lattice discretizations of large classes of integrable quantum field theories. The method proceeds in two steps: The quantum algebraic structure underlying the integrability of the model is determined from the algebra of the interaction terms in the light-cone representation. The representation theory of the relevant quantum algebra is then used to construct the basic ingredients of the quantum inverse scattering method, the lattice Lax matrices and R-matrices. This method is illustrated with four examples: The Sinh-Gordon model, the affine sl(3) Toda model, a model called the fermionic sl(2|1) Toda theory, and the N=2 supersymmetric Sine-Gordon model. These models are all related to sigma models in various ways. The N=2 supersymmetric Sine-Gordon model, in particular, describes the Pohlmeyer reduction of string theory on AdS_2 x S^2, and is dual to a supersymmetric non-linear sigma model with a sausage-shaped target space.

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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