The Density Matrix

  • P. Diehl
  • H. Kellerhals
  • E. Lustig
Conference paper
Part of the NMR book series (NMR, volume 6)

Abstract

The concept of the density matrix is introduced so that observables, or expectation values of an operator, can be calculated in a straightforward way for an ensemble of microsystems with time-dependent properties. To follow the presentation of this Chapter, the reader should be familiar with the material of Sections A.1 to A.3 and of Chapter V. A more detailed account of the subject is found in a monograph by Lynden-Bell [94]; the definitions and the nomenclature used here are similar to those in that monograph.

Keywords

Covariance 

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Copyright information

© Springer-Verlag Berlin · Heidelberg 1972

Authors and Affiliations

  • P. Diehl
    • 1
  • H. Kellerhals
    • 1
  • E. Lustig
    • 2
  1. 1.Department of PhysicsUniversity of BasleSwitzerland
  2. 2.Food and Drug AdministrationUSA

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