Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-12-28
Phys.Rev.D82:025021,2010
Physics
High Energy Physics
High Energy Physics - Theory
35 pages, 10 .pdf figures. v2: version accepted for publication in Physical Review D
Scientific paper
10.1103/PhysRevD.82.025021
Restricting the functional integral to the Gribov region $\Omega$ leads to a deep modification of the behavior of Euclidean Yang-Mills theories in the infrared region. For example, a gluon propagator of the Gribov type, $\frac{k^2}{k^4+{\hat \gamma}^4}$, can be viewed as a propagating pair of unphysical modes, called here $i$-particles, with complex masses $\pm i{\hat \gamma}^2$. From this viewpoint, gluons are unphysical and one can see them as being confined. We introduce a simple toy model describing how a suitable set of composite operators can be constructed out of $i$-particles whose correlation functions exhibit only real branch cuts, with associated positive spectral density. These composite operators can thus be called physical and are the toy analogy of glueballs in the Gribov-Zwanziger theory.
Baulieu Laurent
Dudal David
Guimaraes Marcelo S.
Huber Markus Q.
Sorella Silvio Paolo
No associations
LandOfFree
Gribov horizon and i-particles: about a toy model and the construction of physical operators 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 Gribov horizon and i-particles: about a toy model and the construction of physical operators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gribov horizon and i-particles: about a toy model and the construction of physical operators will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-91795