2007/05/28 by R. F. Sobreiro, Sobreiro, R. F.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #hep-th
paper · pdf · doi:10.48550/arxiv.0705.4107
PhD thesis; Advisor: S. P. Sorella; 136 pages; Text in Portuguese (To be replaced by an English version as soon as possible)
arxiv created 2007/05/28 · arxiv updated 2009/12/01
Some nonperturbative aspects of Euclidean Yang-Mills theories in four dimensions, quantized in the Landau gauge, are analytically studied. In particular, we investigate the dynamical mass generation for the gluons due to the presence of dimension two condensates. This study is performed in the framework of the local composite operator technique in the case of the Yang-Mills action as well as in the case of the Gribov-Zwanziger action. Further, an investigation of the Gribov ambiguities in the linear covariant gauges is presented.