Seiberg Duality and e + e − Experiments ∗
Seiberg Duality and e + e − Experiments ∗
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塞伯格对偶性和 e + e − 实验 *
DOI：
10.1103/physrevd.59.105008
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发表时间：
1998
影响因子：
5
通讯作者：
H. Murayama
中科院分区：
文献类型：
--
作者：
A. Gouvea;A. Friedland;H. Murayama
超对称规范理论中的Seiberg对偶是指两个不同的理论在红外极限下描述相同的物理现象。然而，在强耦合理论中很难计算出物理量，因此很难比较电理论和磁理论的物理性质。为了更深入地了解两种理论的等价性，我们在超共形窗口中研究了两种理论的“e{sup +}e{sup -}”的“强子”截面。我们描述了一种技术，使我们能够在红外极限下精确地计算截面。它们在低能极限下确实是相等的，并且由于异常匹配条件的存在，保证了它们的相等性。两种理论的总“e{sup +}e{sup -}”截面的紫外行为是不同的。我们评论了提出的非超对称对偶性。我们还分析了两种理论中“{gamma}{gamma}”和“WW”散射振幅的一致性，特别是试图理解它们的等效性是否可以用异常匹配条件来解释。
Seiberg duality in supersymmetric gauge theories is the claim that two different theories describe the same physics in the infrared limit. However, one cannot easily work out physical quantities in strongly coupled theories and hence it has been difficult to compare the physics of the electric and magnetic theories. In order to gain more insight into the equivalence of two theories, we study the ''e{sup +}e{sup -}'' cross sections into ''hadrons'' for both theories in the superconformal window. We describe a technique which allows us to compute the cross sections exactly in the infrared limit. They are indeed equal in the low-energy limit and the equality is guaranteed because of the anomaly matching condition. The ultraviolet behavior of the total ''e{sup +}e{sup -}'' cross section is different for the two theories. We comment on proposed nonsupersymmetric dualities. We also analyze the agreement of the ''{gamma}{gamma}'' and ''WW'' scattering amplitudes in both theories, and in particular try to understand if their equivalence can be explained by the anomaly matching condition.