Analytic structure of Landau gauge ghost and gluon propagators

作者：Strauss Stefan^*; Fischer Christian S; Kellermann Christian

来源：Progress in Particle and Nuclear Physics, 2012, 67(2): 239-244.

DOI：10.1016/j.ppnp.2011.12.025

• Yang-Mills
• Dyson-Schwinger equations
• Complex analytic structure

We summarize first explicit results for the analytic structure of the ghost and gluon propagators in the complex momentum plane. To this end we work in Landau gauge and use a truncation of the Dyson-Schwinger equations for the propagators which is close to lattice results at real spacelike Euclidean momenta. Our results indicate the absence of singularities in the complex part of the momentum plane contrary to expectations from Gribov-Zwanziger-like effective theories.

• 出版日期2012-4