SCREENING IN 2-DIMENSIONAL QCD

Citation
E. Abdalla et al., SCREENING IN 2-DIMENSIONAL QCD, International journal of modern physics A, 12(25), 1997, pp. 4539-4557
Citations number
27
Categorie Soggetti
Physics, Particles & Fields","Physics, Nuclear
ISSN journal
0217751X
Volume
12
Issue
25
Year of publication
1997
Pages
4539 - 4557
Database
ISI
SICI code
0217-751X(1997)12:25<4539:SI2Q>2.0.ZU;2-T
Abstract
We discuss the issue of screening and confinement of external color ch arges in bosonized two-dimensional quantum chromodynamics. Our computa tion relies on the static solutions of the semiclassical equations of motion. We consider the problem with fermions in the fundamental repre sentation, as well as arbitrary products thereof, from which the case of adjoint representation may be obtained by suitable constraints in t he massless case. The mass term is treated perturbatively. Under these assumptions, we arrive at the conclusion that, in the cases considere d so far (fermions in the fundamental representation or arbitrary numb ers of copies thereof) screening seems to prevail. Indeed, we found no solution compatible to confinement. To confirm this result further, w e outline the construction of operators corresponding to screened quar ks.