Identifying wave packet fractional revivals by means of information entropy

Details Identifying wave packet fractional revivals by means of information entropy Identifying wave packet fractional revivals by means of information entropy

2008-01-15

arxiv.org/abs/0801.2267v1

Physical Review Letters 99, 263601 (2007)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.99.263601

Wave packet fractional revivals is a relevant feature in the long time scale evolution of a wide range of physical systems, including atoms, molecules and nonlinear systems. We show that the sum of information entropies in both position and momentum conjugate spaces is an indicator of fractional revivals by analyzing three different model systems: $(i)$ the infinite square well, $(ii)$ a particle bouncing vertically against a wall in a gravitational field, and $(iii)$ the vibrational dynamics of hydrogen iodide molecules. This description in terms of information entropies complements the usual one in terms of the autocorrelation function.

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