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arXiv 1009.4522hep-phhep-thnucl-th
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两费米子系统Bethe-Salpeter方程在Minkowski空间的解

Solution of the Bethe-Salpeter equation in Minkowski space for a two fermion system

J. Carbonell, V. A. Karmanov

摘要:

本文将以前为无自旋粒子而发展的求解闵可夫斯基空间中Bethe-Salpeter方程的方法推广到双费米子系统。该方法是基于Nakanishi积分表示的振幅和投影的光前平面上的方程。在不修改原始BS振幅的情况下,正则化投影的两个费米子核中的奇异性。给出了J=0束缚态在标量、赝标量和无质量矢量交换核下的数值解,结合能与欧几里德结果一致。得到了Minkowski空间中相应的振幅。

英文摘要:

The method of solving the Bethe-Salpeter equation in Minkowski space, developed previously for spinless particles, is extended to a system of two fermions. The method is based on the Nakanishi integral representation of the amplitude and on projecting the equation on the light-front plane. The singularities in the projected two-fermion kernel are regularized without modifying the original BS amplitudes. The numerical solutions for the J=0 bound state with the scalar, pseudoscalar and massless vector exchange kernels are found. Binding energies are in close agreement with the Euclidean results. Corresponding amplitudes in Minkowski space are obtained.

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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