Calculating the gauge-invariant two-point correlation function of gluonic field strengths

Details Calculating the gauge-invariant two-point correlation function of gluonic field strengths Calculating the gauge-invariant two-point correlation function of gluonic field strengths

2005-10-26

arxiv.org/abs/hep-ph/0510343v1

JHEP 0601 (2006) 091

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, no figures

Scientific paper

10.1088/1126-6708/2006/01/091

The two-point gauge-invariant correlation function of gluonic field strengths, which is the main input in the stochastic vacuum model, is derived by using its relation to the Green functions of one- and two-gluon gluelumps. These Green functions are found by evaluating the path integrals of one and two gluons confined in the field of an infinitely heavy adjoint source. This allows one to obtain also the terms in the exponential asymptotics of the two-point correlation function, which are produced by fluctuations of the gluons around their mean separation from the source. The pre-exponents are derived as well, demonstrating some novel dependences on the distance.

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