Conventional Quantum Mechanics Without Wave Function and Density Matrix

Details Conventional Quantum Mechanics Without Wave Function and Density Matrix Conventional Quantum Mechanics Without Wave Function and Density Matrix

1999-02-24

arxiv.org/abs/quant-ph/9902079v1

Physics

Quantum Physics

Latex, 37 pages, to be published as lectures given at the Latin American School of Physics, (XXXI ELAF, July-August, 1998, Mex

Scientific paper

10.1063/1.58229

The tomographic invertable map of the Wigner function onto the positive probability distribution function is studied. Alternatives to the Schr\"odinger evolution equation and to the energy level equation written for the positive probability distribution are discussed. Instead of the transition probability amplitude (Feynman path integral) a transition probability is introduced. A new formulation of the conventional quantum mechanics (without wave function and density matrix) based on the ``probability representation'' of quantum states is given. An equation for the propagator in the new formulation of quantum mechanics is derived. Some paradoxes of quantum mechanics are reconsidered.

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