Journal of University of Chinese Academy of Sciences >
Leggett inequality and nonlocal realism
Received date: 2009-05-20
Revised date: 2009-06-03
Online published: 2009-11-15
Through comparing the Leggett inequality with Bell inequalities, we investigate the nature of the nonlocal term in Leggett inequality and obtain various Leggett inequalities with different powers of the nonlocal term. We find that in different powers of δ the generalized Leggett inequalities correspond to different degrees of bipartite correlation, that is, the degree of correlation can be determined by the power of δ. The violation degrees of the generalized Leggett inequality and the Bell inequality are compared under the circumstance of quantum mechanics. The relations between violation of inequalities and nonlocal term are analyzed.
Key words： Leggett inequality; non-locality; quantum correlations
LI Jun-Li , QIAO Cong-Feng . Leggett inequality and nonlocal realism[J]. Journal of University of Chinese Academy of Sciences, 2009 , 26(6) : 745 -748 . DOI: 10.7523/j.issn.2095-6134.2009.6.003
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