Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1996-12-06
Phys.Rev. D56 (1997) 5040-5049
Physics
High Energy Physics
High Energy Physics - Theory
20 pages, Revtex
Scientific paper
10.1103/PhysRevD.56.5040
We consider SU(2) Yang-Mills theory in 1+1 dimensions coupled to massless adjoint fermions. With all fields in the adjoint representation the gauge group is actually SU(2)/Z_2, which possesses nontrivial topology. In particular, there are two distinct topological sectors and the physical vacuum state has a structure analogous to a \theta vacuum. We show how this feature is realized in light-front quantization, with periodicity conditions used to regulate the infrared and treating the gauge field zero mode as a dynamical quantity. We find expressions for the degenerate vacuum states and construct the analog of the \theta vacuum. We then calculate the bilinear condensate in the model. We argue that the condensate does not affect the spectrum of the theory, although it is related to the string tension that characterizes the potential between fundamental test charges when the dynamical fermions are given a mass. We also argue that this result is fundamentally different from calculations that use periodicity conditions in x^1 as an infrared regulator.
No associations
LandOfFree
(1+1)-Dimensional Yang-Mills Theory Coupled to Adjoint Fermions on the Light Front does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with (1+1)-Dimensional Yang-Mills Theory Coupled to Adjoint Fermions on the Light Front, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and (1+1)-Dimensional Yang-Mills Theory Coupled to Adjoint Fermions on the Light Front will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-247011