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Statistical Models

by mezarashi
Tags: models, statistical
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mezarashi
#1
Oct12-05, 06:34 AM
HW Helper
P: 661
I understand that there are a couple of statistical models out there that describe physical systems. One I know is Fermi-Dirac statistics. What are the other models, what are their key features and when are they applied? When working with a system, how can you be sure you should be using this particular model.

Any clues on how these models "derived" if they were at all. Thanks for your input ^^
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mathman
#2
Oct12-05, 04:14 PM
Sci Advisor
P: 6,040
The two principal statistics describing particles at the atomic level are Fermi-Dirac and Bose-Einstein. The F-D describe particles with half integer spin (electrons, protons, neutrons,etc.), while B-E describe particles of integer spin (H1 atoms, photons, etc.). One major (maybe the most important) difference between them is that F-D particles obey the Pauli exclusion principle, i.e. only one particle may be in a given state (the standard description of electrons in atoms results from this), while B-E particles do not (leading to experiments involving B-E condensates - you can look it up).


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