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Yanagi Trace Inequality of Quantum Information Theory
Author(s): LIU Bo
Pages: 93-
95
Year: 2010
Issue:
3
Journal: Journal of Shaanxi Institute of Education
Abstract: 设ρ和X是自伴矩阵,广义斜信息Sf,g(ρ,X)=Tr[f(ρ)Xg(ρ)X]-Tr[f(ρ)g(ρ)X2]在给定连续实值函数f和g的条件下,Sf,g是正的或者负的.利用这个很重要的结论,可以证明Yanagi迹不等式,即若A和B是正定矩阵,则对于任意的实数0≤s≤1的条件下Tr{(A+B)s[A(logA)2+B(logB)2]-(A+B)s-1(AlogA+BlogB)2}≥0.
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