Revisiting the vector and axial-vector vacuum susceptibilities

被引：21

作者：

Chang, Lei ^{[2
,3
]}

Liu, Yu-xin ^{[2
,3
,4
]}

Sun, Wei-min ^{[1
,5
]}

Zong, Hong-shi ^{[1
,5
]}

机构：

[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[3] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[4] Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China

[5] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China

来源：

PHYSICS LETTERS B | 2008年 / 669卷 / 05期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.physletb.2008.10.010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We re-investigate the vector and axial-vector vacuum susceptibilities by, taking advantage of the vector and axial-vector Ward-Takahashi identities. We show analytically that, in the chiral limit, the vector vacuum susceptibility is zero and the axial-vector vacuum susceptibility equals three fourths of the Square of the pion decay constant. Besides, our analysis reproduces the Weinberg sum rule. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：327 / 330

页数：4

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