Joint Entropy of the Harmonic Oscillator with Time Dependent Mass and Frequency

摘要

Time dependent entropy of harmonic oscillator with time dependent mass andfrequency are investigated. The joint entropy so called Leipnik's entropy iscalculated by using time dependent wave function obtained by the Feynman pathintegral method. It is shown that, Leipnik's entropy fluctuates with time.However in constant mass and time dependent frequency case, entropy increasesmonotonically with time.