Different origins of running in the 2Dℂ⁢ℙ⁡(1)model

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2024-11-07 DOI:10.1103/physrevd.110.096007

Kasra Kiaee, Alexander Monin

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引用次数: 0

Abstract

We revisit the computation of the beta function in the two-dimensional

ℂ ℙ (1)

sigma model. We show that in different schemes, different diagrams are responsible for the running, such as momentum-independent tadpoles or even UV-finite bubble diagrams. We also comment on the relation between the beta functions and the energy dependence of scattering amplitudes.

查看原文本刊更多论文

二维ℂℙ(1)模型中运行的不同起源

我们重温了二维ℂℙ(1) σ模型中β函数的计算。我们表明，在不同的方案中，不同的图负责运行，比如与动量无关的蝌蚪图，甚至是紫外无限气泡图。我们还评论了β函数与散射振幅的能量依赖性之间的关系。

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

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.