1206.4109 (Lin Zhang et al.)

Unifying Treatment of Discord via Relative Entropy    [PDF]

Lin Zhang, Shao-Ming Fei, Jun Zhu

We study the monotonicity inequality of relative entropy under completely positive linear maps. A new form of zero-discord state via Petz's monotonicity condition on relative entropy with equality has been derived systematically. A generalization of symmetric zero-discord states is presented and the related physical implications are discussed.

View original: http://arxiv.org/abs/1206.4109