Conic Approach to Quantum Graph Parameters Using Linear Optimization Over the Completely Positive Semidefinite Cone
Conic Approach to Quantum Graph Parameters Using Linear Optimization Over the Completely Positive Semidefinite Cone
复制标题
在完全正半定锥上使用线性优化来求解量子图参数的圆锥曲线方法
DOI:
10.1137/14097865x
复制
发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Teresa Piovesan
中科院分区:
文献类型:
--
作者:
M. Laurent;Teresa Piovesan
We investigate the completely positive semidefinite cone ${\mathcal{CS}_{+}^n}$, a new matrix cone consisting of all $n\times n$ matrices that admit a Gram representation by positive semidefinite matrices (of any size). In particular, we study relationships between this cone and the completely positive and the doubly nonnegative cone, and between its dual cone and trace positive noncommutative polynomials. We use this new cone to model quantum analogues of the classical independence and chromatic graph parameters $\alpha(G)$ and $\chi(G)$, which are roughly obtained by allowing variables to be positive semidefinite matrices instead of $0/1$ scalars in the programs defining the classical parameters. We can formulate these quantum parameters as conic linear programs over the cone ${\mathcal{CS}_{+}^n}$. Using this conic approach we can recover the bounds in terms of the theta number and define further approximations by exploiting the link to trace positive polynomials.
影响因子:
0.7
作者:
V. Paulsen;I. Todorov
通讯作者:
V. Paulsen;I. Todorov
影响因子:
1.6
作者:
I. Klep;M. Schweighofer
通讯作者:
M. Schweighofer