An all-orders derivative expansion

被引：15

作者：

Dunne, G

机构：

[1] Physics Department, University of Connecticut, Storrs

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 1997年 / 12卷 / 06期

关键词：

D O I：

10.1142/S0217751X97000876

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：

We evaluate the exact QED(2+1) effective action for fermions in the presence of a family of static but spatially inhomogeneous magnetic field profiles. This exact result yields an all-orders derivative expansion of the effective action, and indicates that the derivative expansion is an asymptotic, rather than a convergent, expansion.

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页码：1143 / 1151

页数：9

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