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arXiv 1009.2632nucl-thhep-ph
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单介子交换势的重整化及其流

Renormalization of One Meson Exchange Potentials and Their Currents

A. Calle Cordon, E. Ruiz Arriola

摘要:

本文分析了点核子的核子-核子单介子交换势及其波函数和相应的介子交换流。主要的Nc贡献产生了一个局部的和能量无关的势,它呈现出1/r^3的奇点,需要重整化。我们展示了如何调用合适的边界条件,中子-质子相移和氘核的性质变得在很大程度上不敏感的核子子结构和矢量介子。实际上,合理的协议与低能量数据的实际值的耦合常数(如SU(3)值)沿类似的线的介子交换电流的分析表明,这种重整化方案意味着巨大的简化,同时遵守精确的规范不变性在任何阶段的计算。

英文摘要:

The Nucleon-Nucleon One Meson Exchange Potential, its wave functions and related Meson Exchange Currents are analyzed for point-like nucleons. The leading Nc contributions generate a local and energy independent potential which presents 1/r^3 singularities, requiring renormalization. We show how invoking suitable boundary conditions, neutron-proton phase shifts and deuteron properties become largely insensitive to the nucleon substructure and to the vector mesons. Actually, reasonable agreement with low energy data for realistic values of the coupling constants (e.g. SU(3) values) is found. The analysis along similar lines for the Meson Exchange Currents suggests that this renormalization scheme implies tremendous simplifications while complying with exact gauge invariance at any stage of the calculation.

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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