QFT 有限公式中的有效势能

IF 2.5 3区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

Nuclear Physics B Pub Date : 2024-07-29 DOI:10.1016/j.nuclphysb.2024.116642

Sander Mooij, Mikhail Shaposhnikov

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引用次数: 0

摘要

在最近的研究中，我们展示了如何计算微扰 QFT 中的-点相关函数而不遇到中间发散。在这里，我们想明确说明，我们可以用同样的方法计算量子有效势。作为一个主要例子，我们考虑了一个有两个场的理论，这两个场的真空期望值（vev）有大有小。我们证明，不需要在两个场之间进行微调，就可以保持不同场的真空期望值之间的层次性。

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Effective potential in finite formulation of QFT

In recent works [1], [2], we have shown how n-point correlation functions in perturbative QFT can be computed without running into intermediate divergences. Here we want to illustrate explicitly that one can calculate the quantum effective potential by the same method. As a main example, we consider a theory with two fields having large and small vacuum expectation values (vev). We show that no fine-tuning between the physical quantities is needed to keep the hierarchy between the vevs of different fields.

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来源期刊

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.