For T < T c , we can write m(x(vector)) = m 0 + m, where m 0 is the mean-field solution of the Ising

For T < T_c, we can write m(x(vector)) = m₀ + δm, where m₀ is the mean-field solution of the Ising model. Show that for h = 0, Gaussian fluctuations around the ordered state m₀ lead to a divergent specific heat as T approaches T_c from below.