Time Dependence of Joint Entropy of Oscillating Quantum Systems

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ÖZCAN Ö., Akturk E., Sever R.

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, vol.47, no.12, pp.3207-3218, 2008 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 12
  • Publication Date: 2008
  • Doi Number: 10.1007/s10773-008-9756-4
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.3207-3218
  • Keywords: Joint entropy, Simple harmonic oscillator, Damped harmonic oscillator, Path integral, UNCERTAINTY, INFORMATION, PRINCIPLE


The time dependent entropy (or Leipnik's entropy) of harmonic and damped harmonic oscillator systems is studied by using time dependent wave function obtained by the Feynman path integral method. The Leipnik entropy and its envelope change as a function of time, angular frequency and damping factor. Our results for simple harmonic oscillator are in agreement with the literature. However, the joint entropy of damped harmonic oscillator shows remarkable discontinuity with time for certain values of damping factor. The envelope of the joint entropy curve increases with time monotonically. These results show the general properties of the envelope of the joint entropy curve for quantum systems.