Boundary quantum field theories perturbed by TT‾: Towards a form factor program

IF 2.5 3区 物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS
Olalla A. Castro-Alvaredo , Stefano Negro , Fabio Sailis
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引用次数: 0

Abstract

Our understanding of irrelevant perturbations of integrable quantum field theories has greatly expanded over the last decade. In particular, we know that, from a scattering theory viewpoint at least, their effect is realised as a modification the two-body scattering amplitudes by a CDD factor. While this sounds like a relatively small change, this CDD factor incorporates a non-trivial dependence on the perturbation parameter(s) and alters substantially the high-energy physics of the model. This occurs through the introduction of a natural length scale and is associated with phenomena such as the Hagedorn transition. In this paper we discuss how all these features extend to boundary integrable quantum field theories and propose a construction for the building blocks of matrix elements of local fields. We show that the same type of building blocks are also found in the sinh-Gordon model with Dirichlet boundary conditions.
由TT形式扰动的边界量子场理论:走向一个形式因子程序
我们对可积量子场论的无关微扰的理解在过去十年中得到了极大的扩展。特别是,我们知道,至少从散射理论的观点来看,它们的作用是通过CDD因子对两体散射振幅的修正来实现的。虽然这听起来像是一个相对较小的变化,但这个CDD因素包含了对扰动参数的重要依赖,并且实质上改变了模型的高能物理特性。这是通过引入自然长度尺度来实现的,并且与Hagedorn过渡等现象有关。本文讨论了这些特征如何推广到边界可积量子场论中,并提出了局域场矩阵元素的构造单元。我们证明了在具有Dirichlet边界条件的sinh-Gordon模型中也发现了相同类型的构建块。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Nuclear Physics B
Nuclear Physics B 物理-物理:粒子与场物理
CiteScore
5.50
自引率
7.10%
发文量
302
审稿时长
1 months
期刊介绍: Nuclear Physics B focuses on the domain of high energy physics, quantum field theory, statistical systems, and mathematical physics, and includes four main sections: high energy physics - phenomenology, high energy physics - theory, high energy physics - experiment, and quantum field theory, statistical systems, and mathematical physics. The emphasis is on original research papers (Frontiers Articles or Full Length Articles), but Review Articles are also welcome.
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