title: Phonon representations.
abstract: The gap between the nonlocalized lattice-phonon description and the localized Einstein oscillator treatment is filled by transforming the phonon Hamiltonian back to the particle variables. The particle-coordinate, normalized, wave function for the phonon vacuum state is exhibited.
authors.affiliation: Department of Physics, University of California, Los Angeles, CA 90024, USA.
authors.forename: J
authors.initials: J
authors.lastname: Schwinger