Investigating the topological structure of quenched lattice QCD with overlap fermions by using multi-probing approximation

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 $16^3\times 32$, 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

References in corpus (9)

• Glueball Spectrum and Matrix Elements on Anisotropic Lattices
• High-precision scale setting in lattice QCD
• Topological susceptibility in the SU(3) gauge theory
• Hunt for new phenomena using large jet multiplicities and missing transverse momentum with ATLAS in 4.7 fb^-1 of sqrt(s) = 7 TeV proton-proton collisions
• Low-Dimensional Long-Range Topological Charge Structure in the QCD Vacuum
• Exploring the structure of the quenched QCD vacuum with overlap fermions
• Some more remarks on the Witten-Veneziano formula for the ${\eta }^{\prime }$ mass
• On the Local Structure of Topological Charge Fluctuations in QCD
• Events with an Isolated Lepton and Missing Transverse Momentum and Measurement of W Production at HERA

Cited by in corpus (1)

• Localization of topological charge density near $T_c$ in quenched QCD with Wilson flow