| New Closed Expression of Interaction Kernel in Bethe-Salpeter Equation for Quark-Antiquark Bound States |
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| 引用本文： | SU Jun-Chen. New Closed Expression of Interaction Kernel in Bethe-Salpeter Equation for Quark-Antiquark Bound States[J]. 理论物理通讯, 2005, 44(3): 487-498 |
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| 作者姓名： | SU Jun-Chen |
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| 作者单位： | Center for Theoretical Physics, Physics College, Jilin University, Changchun 130023, China |
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| 基金项目： | The project supported by National Natural Science Foundation of China |
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| 摘 要： | The interaction kernel in the Bethe-Salpeter equation for quark-antiquark bound states is derived newly from QCD in the case where the quark and the antiquark are of different flavors. The technique of the derivation is the usage of the irreducible decomposition of the Green＇s functions involved in the Bethe-Salpeter equation satisfied by the quark-antiquark four-point Green＇s function. The interaction kernel derived is given a closed and explicit expression which shows a specific structure of the kernel since the kernel is represented in terms of the quark, antiquark and gluon propagators and some kinds of quark, antiquark and/or gluon three, four, five and six-point vertices. Therefore, the expression of the kernel is not only convenient for perturbative calculations, but also suitable for nonperturbative investigations.
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| 关 键 词： | Bethe-Salpeter方程 交感核心 夸克 反夸克 跃进状态 |
| 收稿时间： | 2005-01-12 |
| 修稿时间： | 2005-01-12 |
New Closed Expression of Interaction Kernel in Bethe-Salpeter Equation for Quark-Antiquark Bound States |
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| SU;Jun-Chen. New Closed Expression of Interaction Kernel in Bethe-Salpeter Equation for Quark-Antiquark Bound States[J]. Communications in Theoretical Physics, 2005, 44(3): 487-498 |
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| Authors: | SU Jun-Chen |
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| Abstract: | |
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| Keywords: | Bethe-Salpeter equation interaction kernel quark-antiquark bound state |
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