TY - JOUR
T1 - A universal constraint on the infrared behavior of the ghost propagator in QCD
AU - Gao, Fei
AU - Tang, Can
AU - Liu, Yu xin
N1 - Publisher Copyright:
© 2017 The Authors
PY - 2017/11/10
Y1 - 2017/11/10
N2 - 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.
AB - 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.
KW - Gauge transformation
KW - Ghost dressing function
KW - Ward–Takahashi identity
UR - https://www.scopus.com/pages/publications/85033496201
U2 - 10.1016/j.physletb.2017.09.069
DO - 10.1016/j.physletb.2017.09.069
M3 - Article
AN - SCOPUS:85033496201
SN - 0370-2693
VL - 774
SP - 243
EP - 246
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -