Electroweak theta角的物理残留物
高能物理 - 唯象学
2026-03-25 v2 高能物理 - 理论
摘要
除了众所周知的量子色动力学theta角外,我们还发现标准模型存在另一种在弱力偶极子角度上保持不变的theta角。这种新的theta角可以等同于量子电动力学的theta角,应被视为标准模型的独立参数,可能在具有非简单连通特征的时空中可被观测,这些特征可能存在于可见宇宙之外或来自实验室 setup 的有效背景中。
引用
@article{arxiv.2510.26281,
title = {Physical remnant of electroweak theta angles},
author = {James Brister and Bingwei Long and Longjie Ran and Muhammad Shahzad and Zheng Sun and Yingpei Zou},
journal= {arXiv preprint arXiv:2510.26281},
year = {2026}
}
备注
10 pages; JHEP prepublication version; split to 5 sections; chiral rotations to remove fermion mass phases without shifting the invariant theta angles are discussed in section 4; identification of the QED theta angle and its possible physical effects are discussed in detail in section 5