Relevant gluonic energy scale of spontaneous chiral symmetry breaking from lattice QCD

Details Relevant gluonic energy scale of spontaneous chiral symmetry breaking from lattice QCD Relevant gluonic energy scale of spontaneous chiral symmetry breaking from lattice QCD

2009-11-28

arxiv.org/abs/0911.5391v2

Phys.Rev.D81:014506,2010

Physics

High Energy Physics

High Energy Physics - Lattice

Scientific paper

10.1103/PhysRevD.81.014506

We analyze which momentum component of the gluon field induces spontaneous chiral symmetry breaking in lattice QCD. After removing the high-momentum or low-momentum component of the gluon field, we calculate the chiral condensate and observe the roles of these momentum components. The chiral condensate is found to be drastically reduced by removing the zero-momentum gluon. The reduction is about 40% of the total in our calculation condition. The nonzero-momentum infrared gluon also has a sizable contribution to the chiral condensate. From the Banks-Casher relation, this result reflects the nontrivial relation between the infrared gluon and the zero-mode quark.

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