Emergence of mass in the gauge sector of QCD  

作　　者：J.Papavassiliou 

机构地区：[1]Department of Theoretical Physics and IFIC,University of Valencia and CSIC,E-46100,Valencia,Spain

出　　处：《Chinese Physics C》2022年第11期22-44,共23页中国物理C（英文版）

基　　金：Supported by the grant PID2020-113334GB-I00/AEI/10.13039/501100011033 of the Spanish AEI-MICINN;the grant Prometeo/2019/087 of the Generalitat Valenciana。

摘　　要：It is currently widely accepted that gluons,while massless at the level of the fundamental QCD Lagrangian,acquire an effective mass through the non-Abelian implementation of the classic Schwinger mechanism.The key dynamical ingredient that triggers the onset of this mechanism is the formation of composite massless poles inside the fundamental vertices of the theory.These poles enter the evolution equation of the gluon propagator and nontrivially affect the way the Slavnov-Taylor identities of the vertices are resolved,inducing a smoking-gun displacement in the corresponding Ward identities.In this article,we present a comprehensive review of the pivotal concepts associated with this dynamical scenario,emphasizing the synergy between functional methods and lattice simulations and highlighting recent advances that corroborate the action of the Schwinger mechanism in QCD.

关 键 词：non perturbative QCD Schwinger-Dyson equations Schwinger functions 

分 类 号：O572.243[理学—粒子物理与原子核物理]