A universal constraint on the infrared behavior of the ghost propagator in QCD

被引：4
|
作者：
Gao, Fei [1 ,2 ,3 ]
Tang, Can [1 ,2 ,3 ]
Liu, Yu-xin [1 ,2 ,3 ,4 ]
机构：
[1] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[3] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
[4] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
来源：
PHYSICS LETTERS B | 2017年 / 774卷
基金：
中国国家自然科学基金;
关键词：
Gauge transformation; Ward Takahashi identity; Ghost dressing function; DYNAMICAL SYMMETRY-BREAKING; ANALYTIC PROPERTIES; VERTEX FUNCTION; GAUGE; RENORMALIZATION; CONFINEMENT;
D O I：
10.1016/j.physletb.2017.09.069
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
With proposing a unified description of the fields variation at the level of generating functional, we obtain a new identity for the quark-gluon interaction vertex based on gauge symmetry, which is similar to the Slavnov-Taylor Identities (STIs) based on the Becchi-Rouet-Stora-Tyutin transformation. With these identities, we find that in Landau gauge, the dressing function of the ghost propagator approaches to a constant as its momentum goes to zero, which provides a strong constraint on the infrared behaviour of ghost propagator. (c) 2017 The Authors. Published by Elsevier B.V.
引用
收藏
页码：243 / 246
页数：4
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