标题： 关于更强不确定性关系的弱点 显示英文标题

标题： On the Weak Point of the Stronger Uncertainty Relation

摘要： 我们分析方差和的不确定性关系，这在一些论文中被称为所有不相容可观测量的更强的不确定性关系。 我们证明，对于这些可观测量$A$和$B$的方差和，计算其在其中一个可观测量（例如$B$）本征态下的结果，与一些论文中提出的建议相反，其结果与海森堡-罗伯逊不确定性关系相同，它并不对$A$的方差给出任何界限。 显示英文摘要

摘要： We analyze the uncertainty relation for the sum of variances, which is called in some papers, the stronger uncertainty relation for all incompatible observables. We show that this uncertainty relation for the sum of variances of the observables $A$ and $B$ calculated for the eigenstate of one of these observables, (say of $B$), contrary to the suggestions presented in some papers, leads to the same results as the Heisenberg--Robertson uncertainty relation, that it does not give any bounds on the variance of $A$.