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We study gluon propagator in Landau gauge with lattice QCD, where we use animproved lattice action. The calculation of gluon propagator is performed onlattices with the lattice spacing from 0.40 fm to 0.24 fm and with the latticevolume from $(2.40 fm)^4$ to $(4.0 fm)^4$. We try to fit our results by twodifferent ways, in the first one we interpret the calculated gluon propagatorsas a function of the continuum momentum, while in the second we interpret thepropagators as a function of the lattice momentum. In the both we use modelswhich are the same in continuum limit. A qualitative agreement between twofittings is found.Comment: Revtex 14pages, 11 figure

A STUDY OF GLUON PROPAGATOR ON COARSE LATTICE