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Statistical Models 
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#1
Oct1205, 06:34 AM

HW Helper
P: 660

I understand that there are a couple of statistical models out there that describe physical systems. One I know is FermiDirac 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 ^^ 


#2
Oct1205, 04:14 PM

Sci Advisor
P: 6,056

The two principal statistics describing particles at the atomic level are FermiDirac and BoseEinstein. The FD describe particles with half integer spin (electrons, protons, neutrons,etc.), while BE describe particles of integer spin (H1 atoms, photons, etc.). One major (maybe the most important) difference between them is that FD 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 BE particles do not (leading to experiments involving BE condensates  you can look it up).



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