Cross-ladder effects in Bethe-Salpeter and light-front equations

被引：62

作者：

Carbonell, J

Karmanov, VA

机构：

[1] Lab Phys Subatom & Cosmol, F-38026 Grenoble, France

[2] PN Lebedev Phys Inst, Moscow 119991, Russia

来源：

EUROPEAN PHYSICAL JOURNAL A | 2006年 / 27卷 / 01期

关键词：

D O I：

10.1140/epja/i2005-10194-y

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 Bethe-Salpeter (BS) equation in Minkowski space for scalar particles is solved for a kernel given by a sum of ladder and cross-ladder exchanges. The solution of corresponding light-front (LF) equation, where we add the time-ordered stretched boxes, is also obtained. Cross-ladder contributions are found to be very large and attractive, whereas the influence of stretched boxes is negligible. Both approaches -BS and LF- give very close results.

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页码：11 / 21

页数：11

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