凸性、规范依赖与隧穿速率
高能物理 - 唯象学
2016-10-24 v3 高能物理 - 理论
摘要
我们澄清了与隧穿速率相关的凸性、规范依赖和辐射修正问题。尽管有效作用量在零温和有限温度下具有规范依赖性,但表明隧穿和成核速率保持与规范固定选择无关。以定义从假真空到自身的跃迁振幅的泛函为起点,表明衰变速率恰好由在非极值处求值的非凸假真空有效作用量决定。后者可视为广义弹跳构型,且规范无关性源于适当的 Nielsen 恒等式。这适用于任何导致可逆 Faddeev-Popov 矩阵的规范固定选择。
引用
@article{arxiv.1510.07613,
title = {Convexity, gauge-dependence and tunneling rates},
author = {Alexis D. Plascencia and Carlos Tamarit},
journal= {arXiv preprint arXiv:1510.07613},
year = {2016}
}
备注
26 pages. v2. Improved discussion addressing issues of convexity, and distinguishing between false and true vacuum functionals. v3. Published version. Structured into sections, expanded discussion on Jacobian