LOCAL GAUGE-INVARIANCE OF NONLOCAL INTERACTIONS

被引：18

作者：

OHTA, K

机构：

[1] Institute of Physics, University of Tokyo, Komaba

来源：

PHYSICAL REVIEW C | 1990年 / 41卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.41.1213

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The implication of invariance under local gauge transformation is investigated for electromagnetic interactions of nucleons and pions, which are particles extended in space time. It is shown that it is possible to derive electromagnetic interactions that are nonlocal and at the same time maintain local gauge invariance. Unlike the line current distribution assumed in the literature, the obtained current has a more flexible form that allows phenomenological analyses. It is proven that the current operators satisfy Ward-Takahashi equations for the nucleon, pion, and pion-nucleon vertex. © 1990 The American Physical Society.

引用

页码：1213 / 1222

页数：10

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