Two-dimensional Yang-Mills theory in the leading 1/N expansion revisited

Details Two-dimensional Yang-Mills theory in the leading 1/N expansion revisited Two-dimensional Yang-Mills theory in the leading 1/N expansion revisited

1997-01-07

arxiv.org/abs/hep-th/9701017v1

Nucl.Phys. B495 (1997) 451-460

Physics

High Energy Physics

High Energy Physics - Theory

CERN-TH/96-364, 13 pages, revTeX, no figures

Scientific paper

10.1016/S0550-3213(97)00207-1

We obtain a formal solution of an integral equation for $q\bar q$ bound states, depending on a parameter \eta which interpolates between 't Hooft's (\eta=0) and Wu's (\eta=1) equations. We also get an explicit approximate expression for its spectrum for a particular value of the ratio of the coupling constant to the quark mass. The spectrum turns out to be in qualitative agreement with 't Hooft's as long as \eta \neq 1. In the limit \eta=1 (Wu's case) the entire spectrum collapses to zero, in particular no rising Regge trajectories are found.

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