Automatic computation of three-loop two-point functions in large momentum expansion

被引：9

作者：

Chetyrkin, KG

Harlander, R

Kuhn, JH

Steinhauser, M

机构：

[1] RUSSIAN ACAD SCI,INST NUCL RES,MOSCOW 117312,RUSSIA

[2] UNIV KARLSRUHE,INST THEORET TEILCHENPHYS,D-76128 KARLSRUHE,GERMANY

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 389卷 / 1-2期

关键词：

D O I：

10.1016/S0168-9002(97)00128-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We discuss the calculation of two-point three-loop functions with an arbitrary number of massive propagators and one large external momentum. The relevant subdiagrams are generated automatically. The resulting massless two-point integrals and massive tadpoles are transformed on-line to FORM-expressions ready to be used by existing FORM packages which calculate them analytically. As an example we compute the quartic mass corrections to the photon polarization function.

引用

页码：354 / 356

页数：3

共 10 条

[1]

BROADHURST DJ, 1992, Z PHYS C, V54, P54

[2] Heavy quark vacuum polarisation to three loops [J].