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Seminars

21.01.2008. :: Seminar Laboratorije za optiku i lasere

 

Bohmian Mechanics: A Ray-based Picture of Quantum Mechanics

Ángel S. Sanz
Instituto de Matematicas y Fisica Fundamental Departamento de Fisica Atomica, Molecular y de Agregados Madrid

Seminar ce se odrzati u Sali 10 Instituta za fiziku, u ponedeljak 21. januara u 13h



Abstract

At least up to date, quantum mechanics can be considered the most successful, fundamental theory that explains the physical World.
Nonetheless, the descriptions provided by this theory in any of its pictures (Heisenberg, Schrödinger or Feynman) are purely probabilistic-statistical.
This leaves a question mark in the place where one would ask for an analog to formulations based on classical trajectories (Newton, Euler-Lagrange or Hamilton-Jacobi). The purpose of this talk is to show that such a question can indeed be answered by incorporating into the quantum mechanics based on the Schrödinger equation a description of particle motions. The theory arising from this reformulation, namely Bohmian mechanics, is a theory of rays and waves, such as the former Hamilton`s conception of classical mechanics (and analogous to classical optics). Different examples related to diffraction and interference will be examined in the light of Bohmian quantum mechanics, from slits experiments (the double slit experiment and the Talbot effect) to surface diffraction.
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