Instanton IR stabilization in the nonperturbative confining vacuum

Details Instanton IR stabilization in the nonperturbative confining vacuum Instanton IR stabilization in the nonperturbative confining vacuum

2001-11-16

arxiv.org/abs/hep-ph/0111208v2

JHEP 0112:019,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures; v2: minor corrections, to appear in JHEP

Scientific paper

10.1088/1126-6708/2001/12/019

The influence of nonperturbative fields on instantons in quantum chromodynamics is studied. Nonperturbative vacuum is described in terms of nonlocal gauge invariant vacuum averages of gluon field strength. Effective action for instanton is derived in bilocal approximation and it is demonstrated that stochastic background gluon fields are responsible for infra-red (IR) stabilization of instantons. Dependence of characteristic instanton size on gluon condensate and correlation length in nonperturbative vacuum is found. It is shown that instanton size in QCD is of order of 0.25 fm. Comparison of obtained instanton size distribution with lattice data is made.

Affiliated with

Also associated with

No associations

Rating

Instanton IR stabilization in the nonperturbative confining vacuum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Instanton IR stabilization in the nonperturbative confining vacuum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Instanton IR stabilization in the nonperturbative confining vacuum will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-195305