Question: Compute the specific heat C v = U/T, with U = Z/ = (F)/, for the Ising model in the cases T < T c

Compute the specific heat Cv = ∂U/∂T, with U = −∂Z/∂β = ∂(βF)/∂β, for the Ising model in the cases T < Tc and T > Tc and show that there is a discontinuity at Tc.

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