https://doi.org/10.1140/epja/i2006-10271-9
QNP 2006
Mind the gap
1
Physics Division, Argonne National Laboratory, 60439, Argonne, IL, USA
2
Fachbereich Theoretische Physik, Universität Graz, A-8010, Graz, Austria
3
Department of Physics and Astronomy, University of Pittsburgh, 15260, PA, USA
* e-mail: cdroberts@anl.gov
Received:
8
December
2006
Accepted:
15
December
2006
Published online:
22
March
2007
In this summary of the application of Dyson-Schwinger equations to the theory and phenomenology of hadrons, some deductions following from a nonperturbative, symmetry-preserving truncation are highlighted, notable amongst which are results for pseudoscalar mesons. We also describe inferences from the gap equation relating to the radius of convergence of a chiral expansion, applications to heavy-light and heavy-heavy mesons, and quantitative estimates of the contribution of quark orbital angular momentum in pseudoscalar mesons; and recapitulate upon studies of nucleon electromagnetic form factors.
PACS: 24.85.+p Quarks, gluons, and QCD in nuclei and nuclear processes – / 12.38.Lg Other nonperturbative calculations –
© Società Italiana di Fisica and Springer-Verlag, 2007
