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Basic Concepts

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Part of the Graduate Texts in Contemporary Physics book series (GTCP)

Abstract

Technically speaking, physics deals only with one-body and many-body problems (because the two-body problem reduces to the one-body case, and the three-body problem does not, and is already insolvable). Still, what an average physicist thinks of as “many” in this context is probably something of the order of 1019-1023the number of particles in a cubic centimeter of a gas or a solid, respectively. When you have this many particles on your hands, you need a many-body theory. At these densities, the particles will spend enough time at several de Broglie wavelengths from each other, and therefore we need a quantum many-body theory. (A good thing too: What we really should not mess with is the classical chaos!)

Keywords

Wave Function Occupation Number Quantum Particle Classical Trajectory SchrOdinger Equation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  1. 1.Department of Physics and AstronomyThe University of British ColumbiaVancouverCanada

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