Quantifier elimination theory and maps which preserve semipositivity

被引:0
|
作者
Pastuszak, Grzegorz [1 ]
Skowyrski, Adam [1 ]
Jamiolkowski, Andrzej [2 ]
机构
[1] Nicolaus Copernicus Univ, Fac Math & Comp Sci, Torun, Poland
[2] Nicolaus Copernicus Univ, Fac Phys Astron & Informat, Torun, Poland
关键词
Hermitian superoperators; Positive maps; Quantifier elimination; Sturm's theorem; COMMON INVARIANT SUBSPACES; COMPUTATIONAL-COMPLEXITY; DECISION PROBLEM; 1ST-ORDER THEORY; PRELIMINARIES; CRITERION; GEOMETRY; REALS;
D O I
10.1007/s11128-021-03060-w
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We give an algorithm determining whether a hermiticity-preserving superoperator is positive. In our approach we apply techniques of quantifier elimination theory for real numbers. Furthermore, we argue that quantifier elimination theory should play more significant role in quantum information theory and other areas as well.
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页数:14
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