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quant-ph2016★ 2 cited
Joint product numerical range and geometry of reduced density matrices
Jianxin Chen, Cheng Guo, Zhengfeng Ji +4
The reduced density matrices of a many-body quantum system form a convex set, whose three-dimensional projection is convex in . The boundary of ma…
math.FA2016
Inequalities on generalized matrix functions
Shaowu Huang, Chi-Kwong Li, Yiu-Tung Poon +1
We prove inequalities on non-integer powers of products of generalized matrices functions on the sum of positive semi-definite matrices. For example, for any real number $r \in \{1…