期刊
NUCLEAR PHYSICS B
卷 964, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nuclphysb.2021.115310
关键词
-
资金
- SCOAP3
The value of the dual conformal box integral in Minkowski space is not fully determined by the conformal invariants z and (z) over bar. Depending on the kinematic region, the integral can jump to different branches of the Bloch-Wigner function due to dual special conformal transformations. Most configurations with real z and (z) over bar can be conformally mapped to a configuration in the same kinematic region with two points at infinity, where the box integral can be calculated using the residue theorem.
The dual conformal box integral in Minkowski space is not fully determined by the conformal invariants z and (z) over bar. Depending on the kinematic region its value is on a 'branch' of the Bloch-Wigner function which occurs in the Euclidean case. Dual special conformal transformations in Minkowski space can change the kinematic region in such a way that the value of the integral jumps to another branch of this function, encoding a subtle breaking of dual conformal invariance for the integral. We classify conformally equivalent configurations of four points in compactified Minkowski space. We show that starting with any configuration, one can reach up to four branches of the integral using dual special conformal transformations. We also show that most configurations with real z and (z) over bar can be conformally mapped to a configuration in the same kinematic region with two points at infinity, where the box integral can be calculated directly in Minkowski space using only the residue theorem. (C) 2021 The Author(s). Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据