Texte intégral
2
2
=1
2
2
2
2
henceforth h is \sigma_h but I cannot write on the pages anymore.
2
2
2
2
2
2 2
2
2 2
2
2
2
2
Everywhere the 1/2 comes from the normalisation of the sum over neighbours in the Hamiltonian, that is more usually written with the
red 1/2. Then the critical temperature is changed as well, since it’s like making J->J/2
2
With the factors of 2 cancelled it’s a nicer expression
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