Dyson-Schwinger Approach to Strongly Coupled Theories
Abstract
Although non-perturbative functional methods are often associated with low energy Quantum Chromodynamics, contemporary studies indicate that they provide reliable tools to characterize a much wider spectrum of strongly interacting many-body systems. In this paper, we aim to provide a modest overview on a few notable applications of Dyson-Schwinger equations to QCD and condensed matter physics. After a short introduction, we lay out some formal considerations and proceed by addressing the confinement problem. We discuss in some detail the heavy quark limit of Coulomb gauge QCD, in particular the simple connection between the non-perturbative Green's functions of Yang-Mills theory and the confinement potential. Landau gauge results on the infrared Yang-Mills propagators are also briefly reviewed. We then focus on less common applications, in graphene and high-temperature superconductivity. We discuss recent developments, and present theoretical predictions that are supported by experimental findings.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- March 2013
- DOI:
- 10.1142/S0217732313300061
- arXiv:
- arXiv:1302.5642
- Bibcode:
- 2013MPLA...2830006P
- Keywords:
-
- Dyson–Schwinger equations;
- confinement;
- graphene;
- high-temperature superconductivity;
- 71.10.-w;
- 12.38.Aw;
- 72.80.Vp;
- Theories and models of many-electron systems;
- General properties of QCD;
- High Energy Physics - Phenomenology;
- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Superconductivity
- E-Print:
- 16 pages, 3 figures, invited brief review for Mod.Phys.Lett.A