Covariant propagator and chiral power counting

被引：1

作者：

Liu, Zhou ^{[1
]}

Wen, Li-Hong ^{[1
]}

Yang, Ji-Feng ^{[1
]}

机构：

[1] East China Normal Univ, Sch Phys & Elect Sci, Shanghai 200241, Peoples R China

来源：

NUCLEAR PHYSICS B | 2021年 / 963卷

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.nuclphysb.2020.115288

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Some one-loop diagrams with one and two external baryons/nucleons are revisited using covariant baryon propagators in chiral effective theory. We showed that it is enough to separate and subtract all the local terms that violate chiral power counting to recover chiral power counting, no need to introduce extra operations. The structures of leading chiral corrections and IR enhancement or threshold effects are 'stable' or persist as long as covariant propagators are employed for all particles. (C) 2020 The Author(s). Published by Elsevier B.V.

引用

页数：13

共 50 条

[31] GAUGE COVARIANT FERMION PROPAGATOR IN QUENCHED, CHIRALLY SYMMETRICAL QUANTUM ELECTRODYNAMICS
DONG, ZH
MUNCZEK, HJ
ROBERTS, CD
PHYSICS LETTERS B, 1994, 333 (3-4) : 536 - 544
[32] A Gauge and Lorentz covariant approximation for the quark propagator in an arbitrary gluon field
D. Gromes
The European Physical Journal C - Particles and Fields, 2001, 20 : 523 - 530
[33] Covariant propagator in AdS5×S5 superspace
Peng Dai
Ru-Nan Huang
Warren Siegel
Journal of High Energy Physics, 2010
[34] Power counting in baryon chiral perturbation theory including vector mesons
Fuchs, T
Schindler, MR
Gegelia, J
Scherer, S
PHYSICS LETTERS B, 2003, 575 (1-2) : 11 - 17
[35] A Gauge and Lorentz covariant approximation for the quark propagator in an arbitrary gluon field
Gromes, D
EUROPEAN PHYSICAL JOURNAL C, 2001, 20 (03): : 523 - 530
[36] Chiral Effective Field Theory Beyond the Power-Counting Regime
Hall, Jonathan M. M.
Leinweber, Derek B.
Young, Ross D.
T(R)OPICAL QCD 2010, 2011, 1354
[37] REMARK ON THE COVARIANT QUANTIZATION OF CHIRAL BOSONS
WOTZASEK, C
PHYSICAL REVIEW D, 1991, 44 (06) : R1623 - R1624
[38] Locally covariant chiral fermions and anomalies
Zahn, Jochen
NUCLEAR PHYSICS B, 2015, 890 : 1 - 16
[39] Covariant actions for chiral supersymmetric bosons
Lechner, K
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS, 1999, 47 (1-3): : 209 - 216
[40] COVARIANT ACTION FOR CHIRAL BOSON STRINGS
KUZENKO, SM
SOLOVEV, OA
JETP LETTERS, 1989, 50 (02) : 58 - 61

← 1 2 3 4 5 →