On the Transition from Confinement to Screening in QCD_{1+1} Coupled to Adjoint Fermions at Finite N

Abstract

We consider SU(N) QCD_{1+1} coupled to massless adjoint Majorana fermions, where N is finite but arbitrary. We examine the spectrum for various values of N, paying particular attention to the formation of multi-particle states, which were recently identified by Gross, Hashimoto and Klebanov in the N -> infinity limit of the theory. It is believed that in the limit of vanishing fermion mass, there is a transition from confinement to screening in which string-like states made out of adjoint fermion bits dissociate into stable constituent ``single particles''. In this work, we provide numerical evidence that such a transition into stable constituent particles occurs not only at large N, but for any finite value of N. In addition, we discuss certain issues concerning the ``topological'' properties exhibited by the DLCQ spectrum.

14 pages, Latex

References in corpus (6)

• Quantum Chromodynamics and Other Field Theories on the Light Cone
• The Spectrum of a Large N Gauge Theory Near Transition from Confinement to Screening
• Bound States of Dimensionally Reduced {SYM}_{2+1} at Finite N
• Matrix Theories from Reduced SU(N) Yang-Mills with Adjoint Fermions
• (1+1)-Dimensional Yang-Mills Theory Coupled to Adjoint Fermions on the Light Front
• Screening and confinement in large N_f QCD_2 and in N=1 SYM_2

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