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Physical quantities

The net magnetic moment or ``magnetization' $M$ is given by
\begin{displaymath}
M=\sum_{i=1}^N s_i.
\end{displaymath} (277)

Usually we are interested in the average $\langle M \rangle$ and the fluctuations $\langle M^2 \rangle - \langle M \rangle ^2$ as a function of the temperature of the system and the applied magnetic field.



Adrian E. Feiguin 2009-11-04