Speaker
Description
It has been long and widely believed that topological configurations play crucial roles in the nonperturbative phenomena of QCD and that of Yang-Mills fields in general. Unprecedented amount of high precision data from lattice gauge theories as well as from collider experiments at RHIC and LHC have provided opportunities for nailing down the topological component and characterizing its properties. In this talk, we discuss several examples of progress along this line. We first show how the various features of confinement phase transition in the SU(2) Yang-Mills theory can be quantitatively described by a statistical model of correlated instanton-dyon ensemble. We then demonstrate how the global RHIC+LHC data on jet energy loss observables unambiguously points to the necessity of a non-perturbative topological component in the quark-gluon plasma particularly in the vicinity of (pseudo-)transition temperature. In the last part we briefly discuss the recent exiting progress in the experimental search of gluon topological fluctuations via quark chirality dynamics that can be measured through anomalous transport processes such as the Chiral Magnetic Effect.
[Refs] arXiv:1903.02684; 1808.05461; 1804.01915; 1711.02496; 1611.04586; 1611.02539.
