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UFN, 2002 Volume 172, Number 4, Pages 377–400 (Mi ufn2000)

This article is cited in 39 papers

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Two-dimensional QCD in the Coulomb gauge

Yu. S. Kalashnikova, A. V. Nefediev

Institute for Theoretical and Experimental Physics (Russian Federation State Scientific Center)

Abstract: In the present paper we discuss various aspects of the 't Hooft model for two-dimensional QCD in the limit of an infinite number of colors in the Coulomb gauge. The properties of mesonic excitations are addressed, with special attention paid to the pionic one. The twofold role of the pion is discussed: being a genuine q\=q state it is also a Goldstone boson of two-dimensional QCD. In particular, it is demonstrated explicitly how the soft-pion theorems are satisfied. It is pointed out that the Coulomb-gauge choice seems to be indispensable in studies of hadronic observables with the pions involved.

PACS: 11.10.Kk, 11.15.Pg, 12.38.Aw

Received: July 10, 2001

DOI: 10.3367/UFNr.0172.200204a.0377


 English version:
Physics–Uspekhi, 2002, 45:4, 347–368

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