发表机构
Beihang University(北京航空航天大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
该研究探究多体纠缠见证相关算子的本征值性质,给出构造特殊可分解纠缠见证的充要条件,明确多体可分解纠缠见证本征值的上下确界等关键结果,还分析相关不等式的紧性。
AI 中文摘要
我们研究多体块正算子、可分解纠缠见证(DEW)与不可分解纠缠见证(NDEW)的各类性质。给出利用多体GHZ态构造特殊DEW的充要条件,明确刻画多体DEW最大与最小本征值的上下确界及其平方的迹,推导NDEW、2×n型EW本征值的其他结果及对应物理意义,还通过实例探究这些本征值不等式的紧性。
英文摘要
We investigate various properties of multipartite block-positive operators, decomposable EWs (DEWs), and non-decomposable EWs. We provide a necessary and sufficient condition to construct a special DEW using the multipartite GHZ state. For multipartite DEW, we explicitly characterize the supremum and infimum of maximum and minimum eigenvalues, as well as the trace of its square. We also derive other results concerning NDEW, eigenvalues of $2 \times n$ EWs and the corresponding physical implications. Furthermore, we investigate the tightness of inequalities of these eigenvalues with examples.