1
$\begingroup$

I'm using the Metropolis algorithm for 2D up to 5D for the Ising Model and I want to compute the spin-spin correlation function.

$$c(r)=<s_is_r>−〈s_i〉〈s_r 〉$$ but I'm not sure how to estimate

$$<s_is_r> = \frac{1}{N}\sum s_is_r$$

What can I do for $s_is_r$ numerically?

$\endgroup$

closed as unclear what you're asking by Anton Menshov Jun 9 at 18:07

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 1
    $\begingroup$ The spin-spin correlation function is a matrix. It's not quite clear to me what exactly your question is? $\endgroup$ – Wolfgang Bangerth Mar 11 '15 at 10:27