能量极小元处Mabuchi泛函的严格凸性
量子物理
2019-11-20 v2 密码学与安全
摘要
本文有两部分。首先,我们发现了平行四边形域上加权log-Bergman核的复Hessian的显式公式,并利用该公式给出了沿光滑测地线的Mabuchi泛函严格凸性的一个新证明。其次,当一条C^{1,1}-测地线连接两个非退化能量极小元时,我们也证明了这一严格凸性,方法是证明这样的测地线必定是非退化且光滑的。
引用
@article{arxiv.1711.09716,
title = {Composable security against collective attacks of a modified BB84 QKD protocol with information only in one basis},
author = {Michel Boyer and Rotem Liss and Tal Mor},
journal= {arXiv preprint arXiv:1711.09716},
year = {2019}
}
备注
24 pages; 1 figure; this is an improved version of arXiv:1704.01388 [quant-ph], extended to make the security proof (against collective attacks) fully composable