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arXiv 1605.01263hep-phhep-thnucl-th
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Minkowski空间中的直接Bethe-Salpeter解

Direct Bethe-Salpeter solutions in Minkowski space

J. Carbonell, V. A. Karmanov

摘要:

我们回顾了一种方法,直接解决的Bethe-Salpeter方程在闵可夫斯基空间,无论是束缚态和散射态。它是基于一个适当的处理出现在内核和传播的许多奇点。首次计算了无自旋粒子与单玻色子交换相互作用的离质量壳层散射振幅。使用我们的Minkowski空间解的初始(绑定)和最终(散射)状态,我们计算弹性和过渡(绑定到散射状态)的电磁形状因子。数值验证了跃迁电磁流J.q=0的守恒性,证实了我们解的正确性.

英文摘要:

We review a method to directly solve the Bethe-Salpeter equation in Minkowski space, both for bound and scattering states. It is based on a proper treatment of the many singularities which appear in the kernel and propagators. The off-mass shell scattering amplitude for spinless particles interacting by a one boson exchange was computed for the first time. Using our Minkowski space solutions for the initial (bound) and final (scattering) states, we calculate elastic and transition (bound to scattering state) electromagnetic form factors. The conservation of the transition electromagnetic current J.q=0, verified numerically, confirms the validity of our solutions.

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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