1. Investigating the topological structure of quenched lattice QCD with overlap fermions by using multi-probing approximation
- Author
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Jian-Ping Ma, You-Hao Zou, Guang-Yi Xiong, Ying Chen, Yu-Bin Liu, Chuan Liu, and Jian-Bo Zhang
- Subjects
Physics ,Nuclear and High Energy Physics ,010308 nuclear & particles physics ,Glueball ,High Energy Physics::Lattice ,High Energy Physics - Lattice (hep-lat) ,QCD vacuum ,Lattice (group) ,FOS: Physical sciences ,Astronomy and Astrophysics ,Fermion ,Lattice QCD ,Topology ,01 natural sciences ,High Energy Physics - Lattice ,Correlation function ,0103 physical sciences ,Gauge theory ,010306 general physics ,Instrumentation ,Topological quantum number - Abstract
The topological charge density and topological susceptibility are determined by multi-probing approximation using overlap fermions in quenched SU(3) gauge theory. Then we investigate the topological structure of the quenched QCD vacuum, and compare it with results from the all-scale topological density, the results are consistent. Random permuted topological charge density is used to check whether these structures represent underlying ordered properties. Pseudoscalar glueball mass is extracted from the two-point correlation function of the topological charge density. We study $3$ ensembles of different lattice spacing $a$ with the same lattice volume $16^{3}\times32$, the results are compatible with the results of all-scale topological charge density, and the topological structures revealed by multi-probing are much closer to all-scale topological charge density than that by eigenmode expansion., 12 pages,34 figures
- Published
- 2017