Analysis of topological structure of the QCD vacuum with overlap-Dirac operator eigenmode

Understand

Using the eigenmodes of the overlap-Dirac operator, we study the topological structure of the QCD vacuum.

• We investigate the space-time profile of the low-lying eigenmodes and their contribution to the vacuum action density and chiral condensate under the existence of static color sources.
• We demonstrate that the low-lying Dirac eigenmode shows the flux-tube structure, which suggests the relevance to confinement.
• We also analyze the chiral condensate in the flux-tube.