Fine-tuning problems in quantum field theory and Lorentz invariance: A scalar-fermion model with a physical momentum cutoff

被引：5

作者：

Cortes, J. . L. . ^{[1
]}

Lopez-Sarrion, Justo ^{[2
]}

机构：

[1] Univ Zaragoza, Dept Fis Teor, E-50009 Zaragoza, Spain

[2] Univ Nacl Colombia, Dept Fis, Bogota 111321, Colombia

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2017年 / 32卷 / 15期

关键词：

Space-time symmetries; effective field theories; ENERGY;

D O I：

10.1142/S0217751X17500841

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

In this paper, we study the consistency of having Lorentz invariance as a low energy approximation within the quantum field theory framework. A model with a scalar and a fermion field is used to show how a Lorentz invariance violating high momentum scale, a physical cutoff rendering the quantum field theory finite, can be made compatible with a suppression of Lorentz invariance violations at low momenta. The fine tuning required to get this suppression and to have a light scalar particle in the spectrum are determined at one loop.

引用

页数：10

共 9 条

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