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Remarks on the uncertainty relations
Modern Physics Letters A ( IF 1.5 ) Pub Date : 2020-06-26 , DOI: 10.1142/s0217732320502193
Krzysztof Urbanowski 1
Affiliation  

We analyze general uncertainty relations and we show that there can exist such pairs of non-commuting observables [Formula: see text] and [Formula: see text] and such vectors that the lower bound for the product of standard deviations [Formula: see text] and [Formula: see text] calculated for these vectors is zero: [Formula: see text]. We also show that for some pairs of non-commuting observables the sets of vectors for which [Formula: see text] can be complete (total). The Heisenberg, [Formula: see text], and Mandelstam–Tamm (MT), [Formula: see text], time–energy uncertainty relations ([Formula: see text] is the characteristic time for the observable [Formula: see text]) are analyzed too. We show that the interpretation [Formula: see text] for eigenvectors of a Hamiltonian [Formula: see text] does not follow from the rigorous analysis of MT relation. We show also that contrary to the position–momentum uncertainty relation, the validity of the MT relation is limited: It does not hold on complete sets of eigenvectors of [Formula: see text] and [Formula: see text].

中文翻译:

关于不确定性关系的备注

我们分析了一般的不确定性关系,我们表明可以存在这样的非对易可观察量对 [公式:见文本] 和 [公式:见文本] 以及这样的向量,标准差乘积的下界 [公式:见文本] 和 [Formula: see text] 为这些向量计算的结果为零:[Formula: see text]。我们还表明,对于某些非对易可观察对象,[公式:参见文本]可以是完整的(总)向量集。海森堡,[公式:见文]和曼德尔斯塔姆-塔姆(MT),[公式:见文],时间-能量不确定性关系([公式:见文]是可观测的特征时间[公式:见文] ) 也进行了分析。我们证明了哈密顿量[公式:见文本]的特征向量的解释[公式:见正文] 并非从严格分析 MT 关系得出。我们还表明,与位置-动量不确定性关系相反,MT 关系的有效性是有限的:它不适用于 [公式:见文本] 和 [公式:见文本] 的完整特征向量集。
更新日期:2020-06-26
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