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arXiv 0812.3073nucl-thhep-ph
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Bethe-Salpeter方法中的激发介子

Excited mesons in a Bethe-Salpeter approach

A. Krassnigg

摘要:

在理论强子物理学中,介子是人们关注的中心。它们的构造方式比夸克模型中的重子要简单,但如果要在量子色动力学(强相互作用的量子场论)的背景下,从夸克和胶子的角度理解它们的所有方面,它们仍然是一个相当大的挑战。Dyson-Schwinger-equation方法作为组分夸克模型、Bethe-Salpeter方程、格点量子色动力学和有效场论的补充,已经成为强子性质协变研究的一种非常合适的形式。特别是,径向激发介子表现出对长程强相互作用物理的敏感性。这种敏感性最近已被研究的帮助下,贝特-萨尔彼得方程。在这里,这些研究进行审查,并继续与帐户的未来可能的发展。

英文摘要:

In theoretical hadron physics mesons are a center of attention. Constructed in a simpler way than baryons in the quark model, they still present a considerable challenge if one aims at an understanding of all their aspects in terms of quarks and gluons in the context of Quantum Chromodynamics, the quantum field theory of the strong interaction. Complementary to (constituent-) quark models, reductions of the Bethe-Salpeter equation, lattice QCD, and effective field theories, the Dyson-Schwinger-equation approach has emerged as a well-suited formalism for the covariant study of hadron properties. In particular, radially excited mesons exhibit a sensitivity to long-range strong-interaction physics. This sensitivity has recently been studied with the help of the Bethe-Salpeter equation. Here these studies are reviewed and continued together with an account of possible future developments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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