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arXiv 1208.4763math-phhep-thmath.MP
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可积量子场论的算符展开

An operator expansion for integrable quantum field theories

Henning Bostelmann, Daniela Cadamuro

摘要:

Lechner最近严格地构造了1+1维Minkowski空间上的一大类量子场论,即某些可积模型。然而,这种构造是非常抽象的,并且这些模型中局部观测量的具体形式在很大程度上仍然未知。为了更深入地了解它们的结构,我们建立了一个系列的扩展可观,类似但不完全相同的著名的形状因子扩展。这种扩展将是局部观测量的表征和明确构造的基础,将在其他地方讨论。在这里,我们建立独立的本地化方面的扩展,并分析其行为下的时空对称性。我们还澄清了与量子场论中变形方法的关系,特别是与Buchholz和Summers意义上的翘曲卷积。

英文摘要:

A large class of quantum field theories on 1+1 dimensional Minkowski space, namely, certain integrable models, has recently been constructed rigorously by Lechner. However, the construction is very abstract and the concrete form of local observables in these models remains largely unknown. Aiming for more insight into their structure, we establish a series expansion for observables, similar but not identical to the well-known form factor expansion. This expansion will be the basis for a characterization and explicit construction of local observables, to be discussed elsewhere. Here, we establish the expansion independent of the localization aspect, and analyze its behavior under space-time symmetries. We also clarify relations with deformation methods in quantum field theory, specifically, with the warped convolution in the sense of Buchholz and Summers.

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