Relation between the dynamics of the reduced purity and correlations

Gen Kimura, Hiromichi Ohno, Milán Mosonyi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


General property of the relation between the dynamics of reduced purity and correlations in quantum mechanical systems is investigated. We show that a non-zero time-derivative of the reduced purity of a system implies the existence of non-zero correlations with its environment for any unbounded Hamiltonian with finite variance. This shows the impact of local dynamical information on the correlations, as well as the role of correlations in the mechanism of purity change.

Original languageEnglish
Pages (from-to)233-243
Number of pages11
JournalOpen Systems and Information Dynamics
Issue number3
Publication statusPublished - 2010 Sept
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Mathematical Physics


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