J4 ›› 2010, Vol. 48 ›› Issue (02): 234-236.

• 数学 • 上一篇    下一篇

量子独立的联合数值域解释

张敏1, 靳水林2   

  1. 1. 吉林大学 数学学院, 长春 130012|2. 哈尔滨工业大学 数学系, 哈尔滨 150001
  • 收稿日期:2009-06-26 出版日期:2010-03-26 发布日期:2010-03-22
  • 通讯作者: 靳水林 E-mail:Jinsl@email.jlu.edu.cn

Characterization of Quantum Independence byJoint Numerical Range

ZHANG Min1, JIN Shuilin2   

  1. 1. College of Mathematics, Jilin University, Changchun 130012, China;2. Department of Mathematics, Harbin Institute of Technology, Harbin 150001, China
  • Received:2009-06-26 Online:2010-03-26 Published:2010-03-22
  • Contact: JIN Shuilin E-mail:Jinsl@email.jlu.edu.cn

摘要:

利用算子组的联合数值域解释算子代数的独立性, 得出C*代数C的子C*代数A和B均为量子独立的, 当且仅当对所有的A∈A+, B∈B+, 有
W(A,B)=W(A)×W(B),其中W(A,B)表示算子组(A,B)的联合数值域.

关键词: 联合谱, 联合数值域, 态, 量子独立

Abstract:

A necessary and sufficient condition forC* algebras to be independent is given by use of joint numerical range, that
is, sub C* algebras A and B of C are quantum independent, if and only if for all A∈A+, B∈B+,W(A,B)=W(A)×W(B),where W(A,B) denotes the joint numerical ranges of the operator tuple (A,B).

Key words: joint spectrum, joint numerical range, state, quantum independence

中图分类号: 

  • O177.1