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arXiv 0801.0389hep-phhep-lathep-thnucl-th
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高能强子-强子碰撞的近可积性和禁闭

Near-integrability and confinement for high-energy hadron-hadron collisions

Peter Orland

摘要:

我们研究了大s下QCD的有效哈密顿量,其中纵向规范自由度被抑制,但没有被消除。在轴向规范中,有效场论是一组耦合的(1+1)维主手征模型,它们是完全可积的。在这种情况下,约束问题是可解的,我们发现纵向和横向弦的张力与技术已经用于类似的哈密顿(2+1)维。我们发现一些有效的哈密顿作为程函近似的后验理由。这种近似下的强子由部分子组成,部分子是夸克和西格玛模型中类似孤子的激发。衍射强子-强子散射的出现主要是由于部分子之间的纵向通量交换。

英文摘要:

We investigate an effective Hamiltonian for QCD at large s, in which longitudinal gauge degrees of freedom are suppressed, but not eliminated. In an axial gauge the effective field theory is a set of coupled (1+1)-dimensional principal-chiral models, which are completely integrable. The confinement problem is solvable in this context, and we find the longitudinal and transverse string tensions with techniques already used for a similar Hamiltonian in (2+1)-dimensions. We find some a posteriori justification for the effective Hamiltonian as an eikonal approximation. Hadrons in this approximation consist of partons, which are quarks and soliton-like excitations of the sigma models. Diffractive hadron-hadron scattering appears primarily due to exchange of longitudinal flux between partons.

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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