Title
Exotic baryons in two-dimensional QCD and the generalized sine-Gordon solitons
Date Issued
01 March 2007
Access level
open access
Resource Type
journal article
Author(s)
Universidade Federal de Mato Grosso
Abstract
The solitons and kinks of the SU(3) generalized sine-Gordon model (GSG) are shown to describe the baryonic spectrum of two-dimensional quantum chromodynamics (QCD2). The GSG model arises in the low-energy effective action of bosonized QCD2 with unequal quark mass parameters. The GSG potential for Nf ≤ 3 flavors resembles the potential of the effective chiral lagrangian proposed by Witten to describe low-energy behavior of four dimensional QCD. Among the attractive features of the GSG model are the variety of soliton and kink type solutions for QCD 2 unequal quark mass parameters [JHEP(0701)(2007)(027)]. Exotic baryons in QCD2 [J. Ellis et al JHEP0508(2005)081] are discussed in the context of the GSG model. Various semi-classical computations are performed improving the results of this reference and clarifying the role of unequal quark masses. The remarkable double sine Gordon model also arises as a reduced GSG model bearing a kink(K) type solution describing a multi-baryon; so, the description of some resonances in QCD2 may take advantage of the properties of the K system. © SISSA 2007.
Volume
2007
Issue
3
Language
English
OCDE Knowledge area
Física atómica, molecular y química
Matemáticas aplicadas
Subjects
Scopus EID
2-s2.0-33947633040
Source
Journal of High Energy Physics
ISSN of the container
10298479
Sources of information:
Directorio de Producción Científica
Scopus