Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-08-06
Phys.Rev.D78:125012,2008
Physics
High Energy Physics
High Energy Physics - Theory
26 pages, 16 .eps figures. v3: version accepted for publication in Phys Rev D
Scientific paper
10.1103/PhysRevD.78.125012
In previous works, we have constructed a refined version of the Gribov-Zwanziger action in 4 dimensions, by taking into account a novel dynamical effect. In this paper, we explore the 3-dimensional case. Analogously as in 4 dimensions, we obtain a ghost propagator behaving like $1/p^2$ in the infrared, while the gluon propagator reaches a finite nonvanishing value at zero momentum. Simultaneously, a clear violation of positivity by the gluon propagator is also found. This behaviour of the propagators turns out be in agreement with the recent numerical simulations.
Dudal David
Gracey J. A.
Sorella Silvio Paolo
Vandersickel Nele
Verschelde Henri
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