2015/05/31 by Guang-Yi Xiong, A. P. Chen, J. P. Ma +8
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph
paper · pdf · doi:10.1016/j.physletb.2015.10.085
published as Phys.Lett. B752 (2016) 34-39 · discussions and references are added. Published version in PLB
openalex publication_date 2015/11/10 · arxiv created 2016/02/02 · arxiv updated 2016/02/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/02
Topological charge susceptibility χt for pure gauge SU(3) theory at finite temperature is studied using anisotropic lattices. The over-improved stout-link smoothing method is utilized to calculate the topological charge. Near the phase transition point we find a rapid declining behavior for χt with values decreasing from (188(1) MeV)4 to (67(3) MeV)4 as the temperature increased from zero temperature to 1.9Tc which demonstrates the existence of topological excitations far above Tc. The 4th order cumulant c4 of topological charge, as well as the ratio c4/χt is also investigated. Results of c4 show step-like behavior near Tc while the ratio at high temperature agrees with the value as predicted by the diluted instanton gas model.