V. Majernik et T. Opatrny, ENTROPIC UNCERTAINTY RELATIONS FOR A QUANTUM OSCILLATOR, Journal of physics. A, mathematical and general, 29(9), 1996, pp. 2187-2197
We calculated the Shannon entropy of position and momentum for the sta
tionary quantum states of the harmonic oscillator as a function of its
energy and determined the corresponding entropic uncertainty relation
s for them. We found an approximate phenomenological function for the
dependence of position and momentum entropies on the large quantum num
bers and the corresponding asymptotic entropy-energy relation for the
stationary harmonic oscillator. We also studied the time evolution of
the position and momentum entropies of the non-stationary harmonic osc
illator for the coherent states, squeezed vacuum and Schrodinger cat s
tates.