arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.10552quant-phcs.LOmath-phmath.MPmath.PRmath.QA
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负概率:它们是什么以及它们的用途

Negative probabilities: What they are and what they are for

Andreas Blass, Yuri Gurevich

摘要:

观测空间$\mathcal S$是以一致的方式共享公共样本空间$Ω$的概率分布族$\langle P_i: i\in I \rangle$。$\mathcal S$的\emph{grounding}是$Ω$上的带符号概率分布$\mathcal P$,其产生每个$i$的正确边际分布$P_i$。各种各样的量子场景可以形式化为观测空间。我们描述了一些量子观测空间的所有接地。我们的主要技术成果是一个严格的证明,维格纳分布是唯一的签署概率分布产生正确的边际分布的位置和动量和所有他们的线性组合。

英文摘要:

An observation space $\mathcal S$ is a family of probability distributions $\langle P_i: i\in I \rangle$ sharing a common sample space $Ω$ in a consistent way. A \emph{grounding} for $\mathcal S$ is a signed probability distribution $\mathcal P$ on $Ω$ yielding the correct marginal distribution $P_i$ for every $i$. A wide variety of quantum scenarios can be formalized as observation spaces. We describe all groundings for a number of quantum observation spaces. Our main technical result is a rigorous proof that Wigner's distribution is the unique signed probability distribution yielding the correct marginal distributions for position and momentum and all their linear combinations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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