S. Albeverio et al., ON THE FOURIER-TRANSFORM AND THE SPECTRAL PROPERTIES OF THE P-ADIC MOMENTUM AND SCHRODINGER-OPERATORS, Journal of physics. A, mathematical and general, 30(16), 1997, pp. 5767-5784
A momentum representation for p-adic quantum mechanics is constructed.
It uses a Fourier transform in the L-2-space with respect to the p-ad
ic Lebesgue distribution and a study of its properties. The momentum r
epresentation is used to investigate the spectral properties of the p-
adic momentum operator and to study the (p-adic valued) Schrodinger eq
uation for the p-dic harmonic oscillator.