Abstract
Certain solutions to Harper's equation are discrete analogues of (and approximations to) the Hermite-Gaussian functions. They are the energy eigenfunctions of a discrete algebraic analogue of the harmonic oscillator, and they lead to a definition of a discrete fractional Fourier transform (FT). The discrete fractional FT is essentially the time-evolution operator of the discrete harmonic oscillator.
Original language | English |
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Pages (from-to) | 2209-2222 |
Number of pages | 14 |
Journal | Journal of Physics A: Mathematical and General |
Volume | 33 |
Issue number | 11 |
DOIs | |
Publication status | Published - 24 Mar 2000 |
Externally published | Yes |