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Two-dimensional QCD in the Coulomb gauge

机译:库仑量规中的二维QCD

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摘要

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 qq-bar 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.
机译:在本文中,我们讨论了二维QCD的't Hooft模型的各个方面,它们在库仑量规中具有无限数量的颜色。论述了中子激发的性质,并特别关注了仿生激发。讨论了介子的双重作用:作为真正的qbar态,它也是二维QCD的Goldstone玻色子。特别是,明确证明了如何满足软定理。要指出的是,库仑量表的选择似乎是研究强子可观测物与所涉及的介子必不可少的。

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