All degree 6 local unitary invariants of k qudits

被引：9
|
作者：
Szalay, Szilard [1 ]
机构：
[1] Budapest Univ Technol & Econ, Inst Phys, Dept Theoret Phys, H-1111 Budapest, Hungary
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2012年 / 45卷 / 06期
关键词：
MULTIPARTICLE ENTANGLEMENT;
D O I：
10.1088/1751-8113/45/6/065302
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We give explicit index-free formulae for all the degree 6 (and also degree 4 and 2) algebraically independent local unitary invariant polynomials for finite-dimensional k-partite pure and mixed quantum states. We carry this out using graph-technical methods, which provide illustrations for this abstract topic.
引用
收藏
页数：17
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