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Quantum Mechanics

  1. Joachim Burgdörfer,
  2. Stefan Rotter

Published Online: 15 OCT 2009

DOI: 10.1002/3527600434.eap367.pub2

Encyclopedia of Applied Physics

Encyclopedia of Applied Physics

How to Cite

Burgdörfer, J. and Rotter, S. 2009. Quantum Mechanics. Encyclopedia of Applied Physics. 1–46.

Author Information

  1. Vienna University of Technology, Institute for Theoretical Physics, 1040 Vienna, Austria

Publication History

  1. Published Online: 15 OCT 2009


Quantum mechanics (QM), also called wave mechanics, is the modern theory of matter, of atoms, molecules, solids, and of the interaction of electromagnetic fields with matter. It supersedes the classical mechanics embodied in Newton's laws and contains them as a limiting case (the so-called classical limit of QM). QM has proven to be an extremely successful theory, tested and confirmed to an outstanding degree of accuracy for physical systems ranging in size from subatomic partiles to macroscopic samples of matter, such as superconductors and superfluids. The present article gives a brief introduction into concepts, methods, and applications of mostly non-relativistic quantum physics.


  • eigenfunctions;
  • Schrödinger equation;
  • wave function;
  • photon polarization;
  • quantum correlation